diff --git a/wetb/prepost/hawcstab2.py b/wetb/prepost/hawcstab2.py
index a4c636489a7c10b509840874b61f2ea72821aca7..39106a49b8421b53b9a6951513f7eab1471c4e14 100644
--- a/wetb/prepost/hawcstab2.py
+++ b/wetb/prepost/hawcstab2.py
@@ -37,31 +37,52 @@ def ReadFileHAWCStab2Header(fname):
     includes the column number and units between square brackets.
     """
 
-    def _read(fname, header=0, widths=[20]*15, skipfooter=0):
-        df = pd.read_fwf(fname, header=header, widths=widths,
-                         skipfooter=skipfooter)
-        units = regex_units.findall(''.join(df.columns))
-        return df, units
+    def get_lines(fname):
+        # get the line that contains the header/column names and the first
+        # line that holds the data
+        with open(fname) as f:
+            line_header = f.readline()
+            line_data = f.readline()
+            # sometimes there are more header lines. The header is always on the
+            # last of the lines marked with #
+            while line_data[:2].strip() == '#':
+                line_header = line_data
+                line_data = f.readline()
+        return line_header, line_data
+
+    def get_col_widths(line):
+        # it is very annoying that various files can have various column widths
+        # also, the first column is one character wider than the rest
+        i0 = re.search(r'\S',line).start()
+        i1_col1 = line[i0:].find(' ') + i0
+        # number of columns can also be different (gradients or not, node displ)
+        nr_cols = int(round(len(line)/i1_col1, 0))
+        colwidths = [i1_col1+1] + [i1_col1]*(nr_cols-1)
+        return colwidths
 
-    with open(fname) as f:
-        line = f.readline()
+    def get_col_names(line, colwidths):
+        # because sometimes there are no spaces between the header of each column
+        # sanitize the headers
+        ci = np.array([0] + colwidths).cumsum()
+        # remember zero based indexing
+        ci[1:] = ci[1:] - 1
+        columns = []
+        for i in range(len(ci)-1):
+            # also lose the index in the header
+            colname = line[ci[i]:ci[i+1]][:-2].replace('#', '').strip()
+            columns.append(colname)
+        return columns
 
-    # when gradients are included in the output
-    if len(line) > 800:
-        df, units = _read(fname, header=1, widths=[30]*27)
-        # column name has the name, unit and column number in it...
-        df.columns = [k[:-2].replace('#', '').strip() for k in df.columns]
-        return df, units
-    elif len(line) > 200:
-        df, units = _read(fname, header=0, widths=[20]*15)
-        # column name has the name, unit and column number in it...
-        df.columns = [k[:-2].replace('#', '').strip() for k in df.columns]
-        return df, units
-    # older versions of HS2 seem to have two columns less
-    else:
-        df, units = _read(fname, header=0, widths=[14]*13)
-        df.columns = [k.replace('#', '').strip() for k in df.columns]
-        return df, units
+    line_header, line_data = get_lines(fname)
+    colwidths = get_col_widths(line_data)
+    # FIXME: gradients have duplicate columns: set for with wake updated
+    # and another with frozen wake assumption
+    columns = get_col_names(line_header, colwidths)
+    df = pd.read_fwf(fname, widths=colwidths, comment='#', header=None,
+                     names=columns)
+    units = regex_units.findall(''.join(columns))
+
+    return df, units
 
 
 class InductionResults(object):
@@ -76,8 +97,11 @@ class InductionResults(object):
     def get_col_width(self, fname):
         # figure out column width
         with open(fname) as fid:
+            # line1 contains the header
             line1 = fid.readline()
+            # line2 contains the numerical data
             line2 = fid.readline()
+
         # it is very annoying that various files can have various column widths
         # also, the first column is one character wider than the rest
         i0 = re.search(r'\S',line2).start()
diff --git a/wetb/prepost/tests/data/dtu10mw_nofull.pwr b/wetb/prepost/tests/data/dtu10mw_nofull.pwr
new file mode 100644
index 0000000000000000000000000000000000000000..dcc819d93b054ad9aa3ee231b98ba6ac43e62890
--- /dev/null
+++ b/wetb/prepost/tests/data/dtu10mw_nofull.pwr
@@ -0,0 +1,22 @@
+ #        V [m/s]  1           P [kW]  2           T [kN]  3           Cp [-]  4           Ct [-]  5     Pitch Q [Nm]  6     Flap M [kNm]  7     Edge M [kNm]  8      Pitch [deg]  9      Speed [rpm] 10        Tip x [m] 11        Tip y [m] 12        Tip z [m] 13
+    0.5000000000E+01    0.7970169792E+03    0.3544331376E+03    0.4169253900E+00    0.9270327859E+00    0.9594040831E+04   -0.7285219033E+04    0.4266133176E+03    0.1520000000E+01    0.6000000000E+01    0.1058287730E+00   -0.4570720975E+01    0.8914999301E+02
+    0.6000000000E+01    0.1538224912E+04    0.5028078553E+03    0.4652851459E+00    0.9125415578E+00    0.5381139449E+05   -0.1012310608E+05    0.8194497447E+03    0.4600000000E+00    0.6000000000E+01    0.2331541125E+00   -0.3771950371E+01    0.8918544381E+02
+    0.7000000000E+01    0.2506971009E+04    0.6601028022E+03    0.4772730921E+00    0.8796851381E+00    0.9494399540E+05   -0.1317261132E+05    0.1255760384E+04    0.0000000000E+00    0.6370000000E+01    0.3464163472E+00   -0.2878853577E+01    0.8920985994E+02
+    0.8000000000E+01    0.3761077611E+04    0.8583261420E+03    0.4795983570E+00    0.8756039627E+00    0.1290616014E+06   -0.1709648905E+05    0.1646679988E+04    0.0000000000E+00    0.7280000000E+01    0.4680668290E+00   -0.1686808663E+01    0.8921715254E+02
+    0.9000000000E+01    0.5381732316E+04    0.1080310781E+04    0.4822396840E+00    0.8712284988E+00    0.1701276997E+06   -0.2147779640E+05    0.2092031161E+04    0.0000000000E+00    0.8190000000E+01    0.6022597200E+00   -0.4071172529E+00    0.8919241427E+02
+    0.1000000000E+02    0.7416712473E+04    0.1324854638E+04    0.4851495915E+00    0.8666274836E+00    0.2187145887E+06   -0.2629124663E+05    0.2591677356E+04    0.0000000000E+00    0.9100000000E+01    0.7474581721E+00    0.9382686044E+00    0.8913014778E+02
+    0.1100000000E+02    0.9907484978E+04    0.1546838035E+04    0.4877552803E+00    0.8376760228E+00    0.2812549251E+06   -0.3054233251E+05    0.3279346841E+04    0.0000000000E+00    0.9600000000E+01    0.8928524405E+00    0.2040564708E+01    0.8905163080E+02
+    0.1200000000E+02    0.1061014657E+05    0.1249721989E+04    0.4011774939E+00    0.5670349590E+00    0.2254674006E+06   -0.2399091342E+05    0.3517871551E+04    0.4100000000E+01    0.9600000000E+01    0.8502430701E+00   -0.4898551655E-01    0.8918109828E+02
+    0.1300000000E+02    0.1061208986E+05    0.1077410212E+04    0.3153511352E+00    0.4162151842E+00    0.1829537579E+06   -0.2005519301E+05    0.3521839899E+04    0.6690000000E+01    0.9600000000E+01    0.7105471690E+00   -0.1322639287E+01    0.8921676454E+02
+    0.1400000000E+02    0.1061401890E+05    0.9708527455E+03    0.2525095152E+00    0.3233547837E+00    0.1559014426E+06   -0.1748238187E+05    0.3524730063E+04    0.8620000000E+01    0.9600000000E+01    0.5668305192E+00   -0.2186290412E+01    0.8922206031E+02
+    0.1500000000E+02    0.1061329710E+05    0.8932979867E+03    0.2053212055E+00    0.2592215469E+00    0.1363963165E+06   -0.1551083230E+05    0.3526274664E+04    0.1026000000E+02    0.9600000000E+01    0.4200757269E+00   -0.2868166914E+01    0.8921514105E+02
+    0.1600000000E+02    0.1060155692E+05    0.8319576205E+03    0.1690468823E+00    0.2122553780E+00    0.1211316054E+06   -0.1387742351E+05    0.3523910934E+04    0.1174000000E+02    0.9600000000E+01    0.2690761529E+00   -0.3446315184E+01    0.8920132453E+02
+    0.1700000000E+02    0.1060183963E+05    0.7833358202E+03    0.1409974106E+00    0.1771033654E+00    0.1097254204E+06   -0.1250589079E+05    0.3525345535E+04    0.1310000000E+02    0.9600000000E+01    0.1163384788E+00   -0.3946279752E+01    0.8918325238E+02
+    0.1800000000E+02    0.1059682774E+05    0.7428073023E+03    0.1187798692E+00    0.1498703210E+00    0.1008807108E+06   -0.1130020855E+05    0.3524900846E+04    0.1438000000E+02    0.9600000000E+01   -0.4028360452E-01   -0.4394639668E+01    0.8916198430E+02
+    0.1900000000E+02    0.1061289335E+05    0.7098016174E+03    0.1012000817E+00    0.1285990169E+00    0.9464525489E+05   -0.1025221596E+05    0.3531333519E+04    0.1559000000E+02    0.9600000000E+01   -0.1969844321E+00   -0.4793302157E+01    0.8913884812E+02
+    0.2000000000E+02    0.1060030267E+05    0.6800543291E+03    0.8671201045E-01    0.1112588573E+00    0.8942778021E+05   -0.9275547527E+04    0.3528209496E+04    0.1676000000E+02    0.9600000000E+01   -0.3598763549E+00   -0.5166554397E+01    0.8911339331E+02
+    0.2100000000E+02    0.1061048923E+05    0.6555390118E+03    0.7502015373E-01    0.9733306017E-01    0.8621809447E+05   -0.8410251218E+04    0.3532565660E+04    0.1788000000E+02    0.9600000000E+01   -0.5224480721E+00   -0.5504269566E+01    0.8908699920E+02
+    0.2200000000E+02    0.1060110309E+05    0.6333292288E+03    0.6522967792E-01    0.8573267782E-01    0.8387755891E+05   -0.7596163932E+04    0.3530396023E+04    0.1897000000E+02    0.9600000000E+01   -0.6897955513E+00   -0.5822816349E+01    0.8905901247E+02
+    0.2300000000E+02    0.1058612080E+05    0.6136154737E+03    0.5704072800E-01    0.7604529574E-01    0.8251906318E+05   -0.6837127935E+04    0.3526341412E+04    0.2003000000E+02    0.9600000000E+01   -0.8600401258E+00   -0.6121188447E+01    0.8902990031E+02
+    0.2400000000E+02    0.1061205678E+05    0.5981919525E+03    0.5035738770E-01    0.6812639928E-01    0.8293079728E+05   -0.6168957698E+04    0.3535808055E+04    0.2105000000E+02    0.9600000000E+01   -0.1027553825E+01   -0.6391259215E+01    0.8900089860E+02
+    0.2500000000E+02    0.1061168881E+05    0.5837999848E+03    0.4457969688E-01    0.6131358268E-01    0.8380042886E+05   -0.5525518996E+04    0.3536527702E+04    0.2205000000E+02    0.9600000000E+01   -0.1200272290E+01   -0.6650867142E+01    0.8897053016E+02
diff --git a/wetb/prepost/tests/data/dtu10mw_nogradient.pwr b/wetb/prepost/tests/data/dtu10mw_nogradient.pwr
new file mode 100644
index 0000000000000000000000000000000000000000..3fb025fe44d41ba993ec96e340874be8f604339d
--- /dev/null
+++ b/wetb/prepost/tests/data/dtu10mw_nogradient.pwr
@@ -0,0 +1,22 @@
+ #                V [m/s]  1                   P [kW]  2                   T [kN]  3                   Cp [-]  4                   Ct [-]  5             Pitch Q [Nm]  6             Flap M [kNm]  7             Edge M [kNm]  8              Pitch [deg]  9              Speed [rpm] 10                Tip x [m] 11                Tip y [m] 12                Tip z [m] 13
+      0.5000000000000000E+01      0.7970169791578448E+03      0.3544331376231053E+03      0.4169253899720817E+00      0.9270327859180790E+00      0.9594040831429129E+04     -0.7285219033288880E+04      0.4266133175794696E+03      0.1520000000000000E+01      0.6000000000000000E+01      0.1058287730378880E+00     -0.4570720974965974E+01      0.8914999301491066E+02
+      0.6000000000000000E+01      0.1538224912236643E+04      0.5028078552591091E+03      0.4652851458655674E+00      0.9125415578002156E+00      0.5381139449224927E+05     -0.1012310607930005E+05      0.8194497447377861E+03      0.4600000000000001E+00      0.6000000000000000E+01      0.2331541124624440E+00     -0.3771950370961326E+01      0.8918544380531593E+02
+      0.7000000000000000E+01      0.2506971009248905E+04      0.6601028022124265E+03      0.4772730920662255E+00      0.8796851380883184E+00      0.9494399539690152E+05     -0.1317261132118186E+05      0.1255760383606364E+04      0.0000000000000000E+00      0.6370000000000000E+01      0.3464163472096511E+00     -0.2878853576663426E+01      0.8920985994276425E+02
+      0.8000000000000000E+01      0.3761077610689366E+04      0.8583261420148028E+03      0.4795983570259911E+00      0.8756039627213232E+00      0.1290616013640559E+06     -0.1709648904765180E+05      0.1646679988112126E+04      0.0000000000000000E+00      0.7279999999999999E+01      0.4680668290015476E+00     -0.1686808663189807E+01      0.8921715253544735E+02
+      0.9000000000000000E+01      0.5381732315696529E+04      0.1080310780888448E+04      0.4822396840120912E+00      0.8712284988272722E+00      0.1701276996611903E+06     -0.2147779639777565E+05      0.2092031161012877E+04      0.0000000000000000E+00      0.8190000000000000E+01      0.6022597199520462E+00     -0.4071172529039249E+00      0.8919241427217456E+02
+      0.1000000000000000E+02      0.7416712472523705E+04      0.1324854638420147E+04      0.4851495915269021E+00      0.8666274835963063E+00      0.2187145886774265E+06     -0.2629124662906981E+05      0.2591677355693617E+04      0.0000000000000000E+00      0.9100000000000000E+01      0.7474581721392320E+00      0.9382686044027334E+00      0.8913014778298016E+02
+      0.1100000000000000E+02      0.9907484978459799E+04      0.1546838035017184E+04      0.4877552803179612E+00      0.8376760228436287E+00      0.2812549250549605E+06     -0.3054233250592176E+05      0.3279346840966920E+04      0.0000000000000000E+00      0.9599999999999998E+01      0.8928524405421021E+00      0.2040564708128432E+01      0.8905163079868974E+02
+      0.1200000000000000E+02      0.1061014657108758E+05      0.1249721988766591E+04      0.4011774939027885E+00      0.5670349590398148E+00      0.2254674005676494E+06     -0.2399091342085267E+05      0.3517871550943046E+04      0.4100000000000001E+01      0.9599999999999998E+01      0.8502430701369529E+00     -0.4898551655049134E-01      0.8918109827975073E+02
+      0.1300000000000000E+02      0.1061208985668525E+05      0.1077410211782461E+04      0.3153511352272069E+00      0.4162151841656613E+00      0.1829537578781671E+06     -0.2005519301411685E+05      0.3521839899182678E+04      0.6690000000000001E+01      0.9599999999999998E+01      0.7105471690129758E+00     -0.1322639286687157E+01      0.8921676454114522E+02
+      0.1400000000000000E+02      0.1061401889940045E+05      0.9708527455375043E+03      0.2525095152315331E+00      0.3233547837483274E+00      0.1559014425969238E+06     -0.1748238186619036E+05      0.3524730063354117E+04      0.8620000000000001E+01      0.9599999999999998E+01      0.5668305192378178E+00     -0.2186290411632646E+01      0.8922206030638033E+02
+      0.1500000000000000E+02      0.1061329710264457E+05      0.8932979867475455E+03      0.2053212055070568E+00      0.2592215469078845E+00      0.1363963164848901E+06     -0.1551083229602619E+05      0.3526274664368028E+04      0.1026000000000000E+02      0.9599999999999998E+01      0.4200757268826584E+00     -0.2868166913940989E+01      0.8921514104676571E+02
+      0.1600000000000000E+02      0.1060155692128170E+05      0.8319576204597553E+03      0.1690468823274193E+00      0.2122553779774559E+00      0.1211316053618953E+06     -0.1387742351383117E+05      0.3523910934267796E+04      0.1174000000000000E+02      0.9599999999999998E+01      0.2690761528524743E+00     -0.3446315184459102E+01      0.8920132452776888E+02
+      0.1700000000000000E+02      0.1060183963499188E+05      0.7833358202115986E+03      0.1409974106264970E+00      0.1771033654307255E+00      0.1097254204332629E+06     -0.1250589079254378E+05      0.3525345535114981E+04      0.1310000000000000E+02      0.9599999999999998E+01      0.1163384787611592E+00     -0.3946279752224537E+01      0.8918325237589035E+02
+      0.1800000000000000E+02      0.1059682774409639E+05      0.7428073022970189E+03      0.1187798691986428E+00      0.1498703210122704E+00      0.1008807108347629E+06     -0.1130020855305979E+05      0.3524900845735160E+04      0.1438000000000000E+02      0.9599999999999998E+01     -0.4028360451736025E-01     -0.4394639668368468E+01      0.8916198430045489E+02
+      0.1900000000000000E+02      0.1061289335441474E+05      0.7098016173736669E+03      0.1012000817235990E+00      0.1285990169176314E+00      0.9464525489133733E+05     -0.1025221596297727E+05      0.3531333518711257E+04      0.1559000000000000E+02      0.9599999999999998E+01     -0.1969844320530114E+00     -0.4793302156631236E+01      0.8913884812140398E+02
+      0.2000000000000000E+02      0.1060030266827369E+05      0.6800543290753695E+03      0.8671201044635370E-01      0.1112588572840720E+00      0.8942778021483211E+05     -0.9275547526844854E+04      0.3528209495967019E+04      0.1676000000000000E+02      0.9599999999999998E+01     -0.3598763549410885E+00     -0.5166554397385442E+01      0.8911339331284624E+02
+      0.2100000000000000E+02      0.1061048922554726E+05      0.6555390117784526E+03      0.7502015372940181E-01      0.9733306017006643E-01      0.8621809447266402E+05     -0.8410251218309510E+04      0.3532565660171932E+04      0.1788000000000000E+02      0.9599999999999998E+01     -0.5224480720785591E+00     -0.5504269565763194E+01      0.8908699920362002E+02
+      0.2200000000000000E+02      0.1060110308578692E+05      0.6333292287585914E+03      0.6522967791689528E-01      0.8573267781714662E-01      0.8387755890787989E+05     -0.7596163931537479E+04      0.3530396023248682E+04      0.1897000000000000E+02      0.9599999999999998E+01     -0.6897955512604874E+00     -0.5822816349005327E+01      0.8905901247150452E+02
+      0.2300000000000000E+02      0.1058612079687397E+05      0.6136154737425885E+03      0.5704072800083193E-01      0.7604529573659602E-01      0.8251906317545590E+05     -0.6837127934996724E+04      0.3526341412461991E+04      0.2003000000000000E+02      0.9599999999999998E+01     -0.8600401258454597E+00     -0.6121188446982691E+01      0.8902990031045036E+02
+      0.2400000000000000E+02      0.1061205678332627E+05      0.5981919524558181E+03      0.5035738769763526E-01      0.6812639928143560E-01      0.8293079727758301E+05     -0.6168957697994681E+04      0.3535808055464818E+04      0.2105000000000000E+02      0.9599999999999998E+01     -0.1027553825139650E+01     -0.6391259215359025E+01      0.8900089859581524E+02
+      0.2500000000000000E+02      0.1061168880733778E+05      0.5837999848031249E+03      0.4457969688339745E-01      0.6131358268124843E-01      0.8380042886389370E+05     -0.5525518996295825E+04      0.3536527702270825E+04      0.2205000000000000E+02      0.9599999999999998E+01     -0.1200272290169282E+01     -0.6650867142082967E+01      0.8897053016152849E+02
diff --git a/wetb/prepost/tests/data/dtu10mw_nogradient_v2.pwr b/wetb/prepost/tests/data/dtu10mw_nogradient_v2.pwr
new file mode 100644
index 0000000000000000000000000000000000000000..18414e39c409645fdbbe56620e4e9bc8cddb510d
--- /dev/null
+++ b/wetb/prepost/tests/data/dtu10mw_nogradient_v2.pwr
@@ -0,0 +1,22 @@
+ #        V [m/s]  1           P [kW]  2           T [kN]  3           Cp [-]  4           Ct [-]  5     Pitch Q [Nm]  6     Flap M [kNm]  7     Edge M [kNm]  8      Pitch [deg]  9      Speed [rpm] 10        Tip x [m] 11        Tip y [m] 12        Tip z [m] 13   J_rot [kg*m^2] 14    J_DT [kg*m^2] 15
+    0.5000000000E+01    0.7970164013E+03    0.3544311249E+03    0.4169257765E+00    0.9270290530E+00    0.9593137616E+04   -0.7285178091E+04    0.4266130258E+03    0.1520000000E+01    0.6000000000E+01    0.1058203520E+00   -0.4570793811E+01    0.8914991938E+02    0.1571481470E+09    0.1608991475E+09
+    0.6000000000E+01    0.1538219709E+04    0.5028097774E+03    0.4652843408E+00    0.9125465540E+00    0.5381154104E+05   -0.1012311164E+05    0.8194469682E+03    0.4600000000E+00    0.6000000000E+01    0.2331471676E+00   -0.3772022879E+01    0.8918537014E+02    0.1571992308E+09    0.1609502313E+09
+    0.7000000000E+01    0.2506968250E+04    0.6601011592E+03    0.4772733569E+00    0.8796844048E+00    0.9494301666E+05   -0.1317256657E+05    0.1255759006E+04    0.0000000000E+00    0.6370000000E+01    0.3464089832E+00   -0.2878930752E+01    0.8920978613E+02    0.1572452212E+09    0.1609962217E+09
+    0.8000000000E+01    0.3761073184E+04    0.8583238617E+03    0.4795985857E+00    0.8756030845E+00    0.1290599401E+06   -0.1709642729E+05    0.1646678063E+04    0.0000000000E+00    0.7280000000E+01    0.4680573570E+00   -0.1686889666E+01    0.8921707881E+02    0.1572877418E+09    0.1610387423E+09
+    0.9000000000E+01    0.5381725790E+04    0.1080307716E+04    0.4822398939E+00    0.8712274625E+00    0.1701250704E+06   -0.2147771394E+05    0.2092028650E+04    0.0000000000E+00    0.8190000000E+01    0.6022479265E+00   -0.4072028243E+00    0.8919234085E+02    0.1573090566E+09    0.1610600571E+09
+    0.1000000000E+02    0.7416703191E+04    0.1324850630E+04    0.4851497784E+00    0.8666262802E+00    0.2187106354E+06   -0.2629113938E+05    0.2591674158E+04    0.0000000000E+00    0.9100000000E+01    0.7474438528E+00    0.9381776879E+00    0.8913007496E+02    0.1573041843E+09    0.1610551848E+09
+    0.1100000000E+02    0.9907489855E+04    0.1546833046E+04    0.4877563114E+00    0.8376746793E+00    0.2812500156E+06   -0.3054220181E+05    0.3279348532E+04    0.0000000000E+00    0.9600000000E+01    0.8928368271E+00    0.2040468370E+01    0.8905155874E+02    0.1572781985E+09    0.1610291990E+09
+    0.1200000000E+02    0.1061009458E+05    0.1249708664E+04    0.4011761897E+00    0.5670298486E+00    0.2254602867E+06   -0.2399070932E+05    0.3517854363E+04    0.4100000000E+01    0.9600000000E+01    0.8502202733E+00   -0.4907227681E-01    0.8918102493E+02    0.1573179472E+09    0.1610689477E+09
+    0.1300000000E+02    0.1061210798E+05    0.1077414875E+04    0.3153521956E+00    0.4162176744E+00    0.1829527984E+06   -0.2005522253E+05    0.3521845895E+04    0.6690000000E+01    0.9600000000E+01    0.7105233446E+00   -0.1322709454E+01    0.8921669091E+02    0.1573104544E+09    0.1610614549E+09
+    0.1400000000E+02    0.1061408289E+05    0.9708623175E+03    0.2525114546E+00    0.3233585057E+00    0.1559026021E+06   -0.1748248961E+05    0.3524751234E+04    0.8620000000E+01    0.9600000000E+01    0.5668062119E+00   -0.2186351338E+01    0.8922198680E+02    0.1572919434E+09    0.1610429439E+09
+    0.1500000000E+02    0.1061339581E+05    0.8933094446E+03    0.2053234529E+00    0.2592252984E+00    0.1363988108E+06   -0.1551096512E+05    0.3526307335E+04    0.1026000000E+02    0.9600000000E+01    0.4200504649E+00   -0.2868223450E+01    0.8921506776E+02    0.1572697184E+09    0.1610207189E+09
+    0.1600000000E+02    0.1060168606E+05    0.8319703358E+03    0.1690492188E+00    0.2122589701E+00    0.1211353723E+06   -0.1387757376E+05    0.3523953686E+04    0.1174000000E+02    0.9600000000E+01    0.2690498697E+00   -0.3446369068E+01    0.8920125147E+02    0.1572456021E+09    0.1609966026E+09
+    0.1700000000E+02    0.1060199870E+05    0.7833490971E+03    0.1409997563E+00    0.1771066564E+00    0.1097315539E+06   -0.1250605460E+05    0.3525398165E+04    0.1310000000E+02    0.9600000000E+01    0.1163116774E+00   -0.3946330182E+01    0.8918317960E+02    0.1572208982E+09    0.1609718987E+09
+    0.1800000000E+02    0.1059699385E+05    0.7428200279E+03    0.1187819243E+00    0.1498731325E+00    0.1008861380E+06   -0.1130036820E+05    0.3524955829E+04    0.1438000000E+02    0.9600000000E+01   -0.4031146691E-01   -0.4394688733E+01    0.8916191174E+02    0.1571956213E+09    0.1609466218E+09
+    0.1900000000E+02    0.1061301360E+05    0.7098108720E+03    0.1012013928E+00    0.1286009026E+00    0.9464589093E+05   -0.1025233215E+05    0.3531373380E+04    0.1559000000E+02    0.9600000000E+01   -0.1970142882E+00   -0.4793352129E+01    0.8913877564E+02    0.1571706451E+09    0.1609216456E+09
+    0.2000000000E+02    0.1060032842E+05    0.6800559869E+03    0.8671236208E-01    0.1112593094E+00    0.8942555227E+05   -0.9275572778E+04    0.3528218038E+04    0.1676000000E+02    0.9600000000E+01   -0.3599092827E+00   -0.5166607540E+01    0.8911332074E+02    0.1571450248E+09    0.1608960253E+09
+    0.2100000000E+02    0.1061037601E+05    0.6555310158E+03    0.7501947555E-01    0.9733203156E-01    0.8621293330E+05   -0.8410161825E+04    0.3532528121E+04    0.1788000000E+02    0.9600000000E+01   -0.5224848197E+00   -0.5504327052E+01    0.8908692639E+02    0.1571200057E+09    0.1608710062E+09
+    0.2200000000E+02    0.1060089637E+05    0.6333157929E+03    0.6522851242E-01    0.8573099891E-01    0.8387051357E+05   -0.7596008959E+04    0.3530327481E+04    0.1897000000E+02    0.9600000000E+01   -0.6898353229E+00   -0.5822876284E+01    0.8905893950E+02    0.1570946936E+09    0.1608456941E+09
+    0.2300000000E+02    0.1058585219E+05    0.6136002561E+03    0.5703937371E-01    0.7604353387E-01    0.8251045411E+05   -0.6836951008E+04    0.3526252354E+04    0.2003000000E+02    0.9600000000E+01   -0.8600819689E+00   -0.6121248953E+01    0.8902982728E+02    0.1570694299E+09    0.1608204304E+09
+    0.2400000000E+02    0.1061174995E+05    0.5981779253E+03    0.5035601369E-01    0.6812491272E-01    0.8292118103E+05   -0.6168793380E+04    0.3535706326E+04    0.2105000000E+02    0.9600000000E+01   -0.1027596898E+01   -0.6391318830E+01    0.8900082562E+02    0.1570453133E+09    0.1607963138E+09
+    0.2500000000E+02    0.1061138296E+05    0.5837890084E+03    0.4457848443E-01    0.6131252946E-01    0.8379087418E+05   -0.5525389373E+04    0.3536426299E+04    0.2205000000E+02    0.9600000000E+01   -0.1200315943E+01   -0.6650924960E+01    0.8897045731E+02    0.1570208937E+09    0.1607718942E+09
diff --git a/wetb/prepost/tests/data/dtu10mw_v1.pwr b/wetb/prepost/tests/data/dtu10mw_v1.pwr
new file mode 100644
index 0000000000000000000000000000000000000000..c412bd21ad129a5ec8ce043223fda289432cf13a
--- /dev/null
+++ b/wetb/prepost/tests/data/dtu10mw_v1.pwr
@@ -0,0 +1,23 @@
+ #                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      CP grad:                      CP grad:                      CP grad:                      CT grad:                      CT grad:                      CT grad:                      FW grad:                      FW grad:                      FW grad:                      FW grad:                      FW grad:                      FW grad:
+ #                  V [m/s]  1                     P [kW]  2                     T [kN]  3                     Cp [-]  4                     Ct [-]  5               Pitch Q [Nm]  6               Flap M [kNm]  7               Edge M [kNm]  8                Pitch [deg]  9                Speed [rpm] 10                  Tip x [m] 11                  Tip y [m] 12                  Tip z [m] 13             J_rot [kg*m^2] 14              J_DT [kg*m^2] 15            dQ/dt [kNm/deg] 16            dQ/dV [kNm*s/m] 17            dQ/dO [kNm/rpm] 18             dT/dt [kN/deg] 19             dT/dV [kN*s/m] 20             dT/dO [kN/rpm] 21            dQ/dt [kNm/deg] 22            dQ/dV [kNm*s/m] 23            dQ/dO [kNm/rpm] 24             dT/dt [kN/deg] 25             dT/dV [kN*s/m] 26             dT/dO [kN/rpm] 27
+        0.5000000000000000E+01        0.7970169791578448E+03        0.3544331376231053E+03        0.4169253899720817E+00        0.9270327859180790E+00        0.9594040831429129E+04       -0.7285219033288880E+04        0.4266133175794696E+03        0.1520000000000000E+01        0.6000000000000000E+01        0.1058287730378880E+00       -0.4570720974965974E+01        0.8914999301491066E+02        0.1571486810714816E+09        0.1608996815674816E+09        0.5831251033395528E-01        0.1000206679638058E+04       -0.4008084840742802E+03       -0.3704847187110397E+02        0.1050165387044597E+03        0.2817433982911782E+02       -0.3344468879410391E+03        0.1152969629942774E+04       -0.1781608543546648E+03       -0.7148177238243700E+02        0.1229861785878016E+03        0.5240023830288010E+02
+        0.6000000000000000E+01        0.1538224912236643E+04        0.5028078552591091E+03        0.4652851458655674E+00        0.9125415578002156E+00        0.5381139449224927E+05       -0.1012310607930005E+05        0.8194497447377861E+03        0.4600000000000001E+00        0.6000000000000000E+01        0.2331541124624440E+00       -0.3771950370961326E+01        0.8918544380531593E+02        0.1571997657263904E+09        0.1609507662223904E+09       -0.6575852065421641E+00        0.1360685292240942E+04       -0.5295335763450456E+03       -0.3888956373630987E+02        0.1088933025432413E+03        0.5638758735773794E+02       -0.3815679435367393E+03        0.1452539116039467E+04       -0.8784683125326731E+02       -0.6879271504670193E+02        0.1181070865350491E+03        0.9247387169123199E+02
+        0.7000000000000000E+01        0.2506971009248905E+04        0.6601028022124265E+03        0.4772730920662255E+00        0.8796851380883184E+00        0.9494399539690152E+05       -0.1317261132118186E+05        0.1255760383606364E+04        0.0000000000000000E+00        0.6370000000000000E+01        0.3464163472096511E+00       -0.2878853576663426E+01        0.8920985994276425E+02        0.1572457575952859E+09        0.1609967580912859E+09       -0.2528643779328838E+02        0.1686801881376142E+04       -0.6527564920206764E+03       -0.4557642766260658E+02        0.1179995690734789E+03        0.7474061634029611E+02       -0.4676043759302305E+03        0.1735485246954009E+04       -0.3451896667135957E+02       -0.7536369924122208E+02        0.1219283766076678E+03        0.1201105853489163E+03
+        0.8000000000000000E+01        0.3761077610689366E+04        0.8583261420148028E+03        0.4795983570259911E+00        0.8756039627213232E+00        0.1290616013640559E+06       -0.1709648904765180E+05        0.1646679988112126E+04        0.0000000000000000E+00        0.7279999999999999E+01        0.4680668290015476E+00       -0.1686808663189807E+01        0.8921715253544735E+02        0.1572882794039066E+09        0.1610392798999066E+09       -0.4130807159359752E+02        0.1928614031344112E+04       -0.7364728833652474E+03       -0.5954008034563576E+02        0.1346345472969307E+03        0.8316171148132591E+02       -0.6175747894642805E+03        0.1986618571627411E+04       -0.3961041970741662E+02       -0.9855609798135120E+02        0.1395558940783116E+03        0.1358061967881769E+03
+        0.9000000000000000E+01        0.5381732315696529E+04        0.1080310780888448E+04        0.4822396840120912E+00        0.8712284988272722E+00        0.1701276996611903E+06       -0.2147779639777565E+05        0.2092031161012877E+04        0.0000000000000000E+00        0.8190000000000000E+01        0.6022597199520462E+00       -0.4071172529039249E+00        0.8919241427217456E+02        0.1573095953819258E+09        0.1610605958779258E+09       -0.6392415131954662E+02        0.2168770425430150E+04       -0.8173493020109321E+03       -0.7519310583714535E+02        0.1508683659965266E+03        0.9080171939772322E+02       -0.7899152995852835E+03        0.2237579877877443E+04       -0.4515854932658876E+02       -0.1247500970940785E+03        0.1571243910611799E+03        0.1508789278177841E+03
+        0.1000000000000000E+02        0.7416712472523705E+04        0.1324854638420147E+04        0.4851495915269021E+00        0.8666274835963063E+00        0.2187145886774265E+06       -0.2629124662906981E+05        0.2591677355693617E+04        0.0000000000000000E+00        0.9100000000000000E+01        0.7474581721392320E+00        0.9382686044027334E+00        0.8913014778298016E+02        0.1573047241201547E+09        0.1610557246161547E+09       -0.9428810573004743E+02        0.2406215418885532E+04       -0.8956636175853572E+03       -0.9236489094802178E+02        0.1665244149667083E+03        0.9767382283053594E+02       -0.9841216634432151E+03        0.2487347510092050E+04       -0.5114830177977089E+02       -0.1537989065684419E+03        0.1745487952355842E+03        0.1652714219466671E+03
+        0.1100000000000000E+02        0.9907484978459799E+04        0.1546838035017184E+04        0.4877552803179612E+00        0.8376760228436287E+00        0.2812549250549605E+06       -0.3054233250592176E+05        0.3279346840966920E+04        0.0000000000000000E+00        0.9599999999999998E+01        0.8928524405421021E+00        0.2040564708128432E+01        0.8905163079868974E+02        0.1572787391741392E+09        0.1610297396701392E+09       -0.1632699567734226E+03        0.2672915505748699E+04       -0.9742706282546466E+03       -0.1037200892704274E+03        0.1738807143304963E+03        0.1094599534884759E+03       -0.1164980604679687E+04        0.2770708726685543E+04       -0.4106108112561758E+02       -0.1704169938609436E+03        0.1842330438623933E+03        0.1806326291750896E+03
+        0.1200000000000000E+02        0.1061014657108758E+05        0.1249721988766591E+04        0.4011774939027885E+00        0.5670349590398148E+00        0.2254674005676494E+06       -0.2399091342085267E+05        0.3517871550943046E+04        0.4100000000000001E+01        0.9599999999999998E+01        0.8502430701369529E+00       -0.4898551655049134E-01        0.8918109827975073E+02        0.1573184863697737E+09        0.1610694868657737E+09       -0.7784337033826857E+03        0.2546468588076439E+04       -0.1023720042029936E+04       -0.1237896067153187E+03        0.1644370489163406E+03        0.4288966852953075E+02       -0.1665745774681842E+04        0.2944636332917164E+04       -0.7246807321021743E+03       -0.1792897534881736E+03        0.1893269434325972E+03        0.7145399763822869E+02
+        0.1300000000000000E+02        0.1061208985668525E+05        0.1077410211782461E+04        0.3153511352272069E+00        0.4162151841656613E+00        0.1829537578781671E+06       -0.2005519301411685E+05        0.3521839899182678E+04        0.6690000000000001E+01        0.9599999999999998E+01        0.7105471690129758E+00       -0.1322639286687157E+01        0.8921676454114522E+02        0.1573109916241897E+09        0.1610619921201897E+09       -0.1186339036115162E+04        0.2566034130013184E+04       -0.1365347294515502E+04       -0.1341346012752836E+03        0.1603462706088321E+03       -0.5265045893191127E+01       -0.2013571619409162E+04        0.3087262412014407E+04       -0.1375099117387270E+04       -0.1845597632460034E+03        0.1916767051682129E+03        0.1991393679360004E+01
+        0.1400000000000000E+02        0.1061401889940045E+05        0.9708527455375043E+03        0.2525095152315331E+00        0.3233547837483274E+00        0.1559014425969238E+06       -0.1748238186619036E+05        0.3524730063354117E+04        0.8620000000000001E+01        0.9599999999999998E+01        0.5668305192378178E+00       -0.2186290411632646E+01        0.8922206030638033E+02        0.1572924792137012E+09        0.1610434797097012E+09       -0.1523547952554889E+04        0.2671159210619870E+04       -0.1833184228602433E+04       -0.1420876767236560E+03        0.1600668229275855E+03       -0.4513250914672739E+02       -0.2290711378766428E+04        0.3228165966333190E+04       -0.1980554172348935E+04       -0.1861831817900721E+03        0.1913946251390654E+03       -0.4605327364389421E+02
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+        0.1600000000000000E+02        0.1060155692128170E+05        0.8319576204597553E+03        0.1690468823274193E+00        0.2122553779774559E+00        0.1211316053618953E+06       -0.1387742351383117E+05        0.3523910934267796E+04        0.1174000000000000E+02        0.9599999999999998E+01        0.2690761528524743E+00       -0.3446315184459102E+01        0.8920132452776888E+02        0.1572461359157421E+09        0.1609971364117420E+09       -0.2053559968445305E+04        0.2897055949448059E+04       -0.2854945362786893E+04       -0.1512013341072509E+03        0.1594501559108274E+03       -0.1088556312566996E+03       -0.2757070978921717E+04        0.3477804202007061E+04       -0.3161027551102246E+04       -0.1876161734298662E+03        0.1883412079472982E+03       -0.1176167054628406E+03
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diff --git a/wetb/prepost/tests/test_hawcstab2.py b/wetb/prepost/tests/test_hawcstab2.py
index 0b4c5798a2ce06ac461c99cdc68977f7fb9d021e..2cf12901ff36d6d8b4c22f49a2fd12fc60acd52e 100644
--- a/wetb/prepost/tests/test_hawcstab2.py
+++ b/wetb/prepost/tests/test_hawcstab2.py
@@ -109,7 +109,18 @@ class Tests(unittest.TestCase):
             df_data = res.load_ind(fname)
             data = np.loadtxt(fname)
             np.testing.assert_almost_equal(data, df_data.values)
-            print(df_data.columns)
+
+    def test_pwr_file(self):
+        fnames = ['dtu10mw_nofull.pwr',
+                  'dtu10mw_nogradient.pwr',
+                  'dtu10mw_nogradient_v2.pwr',
+                  'dtu10mw_v1.pwr',]
+        for fname in fnames:
+            fname = pjoin(pdirname(__file__), 'data', fname)
+            res = results()
+            df_data, units = res.load_pwr_df(fname)
+            data = np.loadtxt(fname)
+            np.testing.assert_almost_equal(data, df_data.values)
 
 
 if __name__ == "__main__":