我有一个CTD瓶数据文件，我正尝试将其读入数据框。在文件中，行0-261具有我要跳过的元数据，行262具有由多个空格分隔的列标题，行263具有我要跳过的其他列名信息，此后数据看起来像下面的引号。我想阅读每隔一行（只读取以1,2开头的行，等等）。
pd.read_table(r'/home/trent/Documents/assignment/00602.btl', skiprows=lambda x: (x<262 and x%2!=0), engine='python', sep=' ')
但是我收到一条错误消息：“第6行中预期有6个字段，看到了7个”。 read_csv给了我同样的错误。有办法让它正常工作，还是我不走运？
Blockquote
* Sea-Bird SBE 9 Data File:
* FileName = D:\Data\raw\nbp1701_004.hex
* Software Version Seasave V 7.26.1.8
* Temperature SN = 4209
* Conductivity SN = 2819
* Number of Bytes Per Scan = 40
* Number of Voltage Words = 5
* Number of Scans Averaged by the Deck Unit = 1
* System UpLoad Time = Dec 28 2016 04:15:58
* NMEA Latitude = 59 19.95 S
* NMEA Longitude = 068 29.89 W
* NMEA UTC (Time) = Dec 28 2016 04:15:57
* Store Lat/Lon Data = Append to Every Scan
* SBE 11plus V 5.1g
* number of scans to average = 1
* pressure baud rate = 9600
* NMEA baud rate = 9600
* surface PAR voltage added to scan
* A/D offset = 8
* Latitude/Longitude added to scan
* GPIB address = 1
* advance primary conductivity 0.073 seconds
* advance secondary conductivity 0.073 seconds
* autorun on power up is disabled
* S>
** Ship: RVIB N.B. Palmer
** Cruise: NBP1701
** Station: 00202
** Operator: GA
* System UTC = Dec 28 2016 04:15:58
# interval = seconds: 0.0416667
# start_time = Dec 28 2016 04:15:57 [NMEA time, header]
# <Sensors count="15" >
# <sensor Channel="1" >
# <!-- Frequency 0, Temperature -->
# <TemperatureSensor SensorID="55" >
# <SerialNumber>4209</SerialNumber>
# <CalibrationDate>12-Sep-2016 </CalibrationDate>
# <UseG_J>1</UseG_J>
# <A>4.34663760e-003</A>
# <B>6.29548818e-004</B>
# <C>2.01973913e-005</C>
# <D>1.53681949e-006</D>
# <F0_Old>1000.000</F0_Old>
# <G>4.34644284e-003</G>
# <H>6.29342788e-004</H>
# <I>2.01664652e-005</I>
# <J>1.53546108e-006</J>
# <F0>1000.000</F0>
# <Slope>1.00000000</Slope>
# <Offset>0.0000</Offset>
# </TemperatureSensor>
# </sensor>
# <sensor Channel="2" >
# <!-- Frequency 1, Conductivity -->
# <ConductivitySensor SensorID="3" >
# <SerialNumber>2819</SerialNumber>
# <CalibrationDate>27-Sep-16</CalibrationDate>
# <UseG_J>1</UseG_J>
# <!-- Cell const and series R are applicable only for wide range sensors. -->
# <SeriesR>0.0000</SeriesR>
# <CellConst>2000.0000</CellConst>
# <ConductivityType>0</ConductivityType>
# <Coefficients equation="0" >
# <A>0.00000000e+000</A>
# <B>0.00000000e+000</B>
# <C>0.00000000e+000</C>
# <D>0.00000000e+000</D>
# <M>0.0</M>
# <CPcor>-9.57000000e-008</CPcor>
# </Coefficients>
# <Coefficients equation="1" >
# <G>-9.85457920e+000</G>
# <H>1.37960370e+000</H>
# <I>6.03219116e-004</I>
# <J>2.50145347e-005</J>
# <CPcor>-9.57000000e-008</CPcor>
# <CTcor>3.2500e-006</CTcor>
# <!-- WBOTC not applicable unless ConductivityType = 1. -->
# <WBOTC>0.00000000e+000</WBOTC>
# </Coefficients>
# <Slope>1.00000000</Slope>
# <Offset>0.00000</Offset>
# </ConductivitySensor>
# </sensor>
# <sensor Channel="3" >
# <!-- Frequency 2, Pressure, Digiquartz with TC -->
# <PressureSensor SensorID="45" >
# <SerialNumber>1281</SerialNumber>
# <CalibrationDate>17-May-16</CalibrationDate>
# <C1>-4.160774e+004</C1>
# <C2>-4.184703e-001</C2>
# <C3>1.315700e-002</C3>
# <D1>3.510400e-002</D1>
# <D2>0.000000e+000</D2>
# <T1>3.013996e+001</T1>
# <T2>-3.939720e-004</T2>
# <T3>4.255700e-006</T3>
# <T4>2.107770e-009</T4>
# <Slope>1.00000000</Slope>
# <Offset>0.00000</Offset>
# <T5>0.000000e+000</T5>
# <AD590M>1.278460e-002</AD590M>
# <AD590B>-9.255860e+000</AD590B>
# </PressureSensor>
# </sensor>
# <sensor Channel="4" >
# <!-- Frequency 3, Temperature, 2 -->
# <TemperatureSensor SensorID="55" >
# <SerialNumber>5844</SerialNumber>
# <CalibrationDate>12-Sep-2016 </CalibrationDate>
# <UseG_J>1</UseG_J>
# <A>4.36573253e-003</A>
# <B>6.30179520e-004</B>
# <C>2.00863167e-005</C>
# <D>1.50596866e-006</D>
# <F0_Old>1000.000</F0_Old>
# <G>4.36553148e-003</G>
# <H>6.29971788e-004</H>
# <I>2.00553720e-005</I>
# <J>1.50462745e-006</J>
# <F0>1000.000</F0>
# <Slope>1.00000000</Slope>
# <Offset>0.0000</Offset>
# </TemperatureSensor>
# </sensor>
# <sensor Channel="5" >
# <!-- Frequency 4, Conductivity, 2 -->
# <ConductivitySensor SensorID="3" >
# <SerialNumber>2569</SerialNumber>
# <CalibrationDate>20-Sep-16</CalibrationDate>
# <UseG_J>1</UseG_J>
# <!-- Cell const and series R are applicable only for wide range sensors. -->
# <SeriesR>0.0000</SeriesR>
# <CellConst>2000.0000</CellConst>
# <ConductivityType>0</ConductivityType>
# <Coefficients equation="0" >
# <A>0.00000000e+000</A>
# <B>0.00000000e+000</B>
# <C>0.00000000e+000</C>
# <D>0.00000000e+000</D>
# <M>0.0</M>
# <CPcor>-9.57000000e-008</CPcor>
# </Coefficients>
# <Coefficients equation="1" >
# <G>-1.04785719e+001</G>
# <H>1.58738716e+000</H>
# <I>9.17747073e-005</I>
# <J>9.25102032e-005</J>
# <CPcor>-9.57000000e-008</CPcor>
# <CTcor>3.2500e-006</CTcor>
# <!-- WBOTC not applicable unless ConductivityType = 1. -->
# <WBOTC>0.00000000e+000</WBOTC>
# </Coefficients>
# <Slope>1.00000000</Slope>
# <Offset>0.00000</Offset>
# </ConductivitySensor>
# </sensor>
# <sensor Channel="6" >
# <!-- A/D voltage 0, Oxygen, SBE 43 -->
# <OxygenSensor SensorID="38" >
# <SerialNumber>0186</SerialNumber>
# <CalibrationDate>14-Sep-16</CalibrationDate>
# <Use2007Equation>1</Use2007Equation>
# <CalibrationCoefficients equation="0" >
# <!-- Coefficients for Owens-Millard equation. -->
# <Boc>0.0000</Boc>
# <Soc>0.0000e+000</Soc>
# <offset>0.0000</offset>
# <Pcor>0.00e+000</Pcor>
# <Tcor>0.0000</Tcor>
# <Tau>0.0</Tau>
# </CalibrationCoefficients>
# <CalibrationCoefficients equation="1" >
# <!-- Coefficients for Sea-Bird equation - SBE calibration in 2007 and later. -->
# <Soc>4.4810e-001</Soc>
# <offset>-0.5085</offset>
# <A>-5.3178e-003</A>
# <B> 3.0866e-004</B>
# <C>-4.5954e-006</C>
# <D0> 2.5826e+000</D0>
# <D1> 1.92634e-004</D1>
# <D2>-4.64803e-002</D2>
# <E> 3.6000e-002</E>
# <Tau20> 1.1600</Tau20>
# <H1>-3.3000e-002</H1>
# <H2> 5.0000e+003</H2>
# <H3> 1.4500e+003</H3>
# </CalibrationCoefficients>
# </OxygenSensor>
# </sensor>
# <sensor Channel="7" >
# <!-- A/D voltage 1, Free -->
# </sensor>
# <sensor Channel="8" >
# <!-- A/D voltage 2, Fluorometer, WET Labs ECO-AFL/FL -->
# <FluoroWetlabECO_AFL_FL_Sensor SensorID="20" >
# <SerialNumber>397</SerialNumber>
# <CalibrationDate>23-Feb-15</CalibrationDate>
# <ScaleFactor>6.00000000e+000</ScaleFactor>
# <!-- Dark output -->
# <Vblank>0.1070</Vblank>
# </FluoroWetlabECO_AFL_FL_Sensor>
# </sensor>
# <sensor Channel="9" >
# <!-- A/D voltage 3, Transmissometer, WET Labs C-Star -->
# <WET_LabsCStar SensorID="71" >
# <SerialNumber>CST-557DR</SerialNumber>
# <CalibrationDate>27-Jul-2015</CalibrationDate>
# <M>21.2900</M>
# <B>-0.1060</B>
# <PathLength>0.250</PathLength>
# </WET_LabsCStar>
# </sensor>
# <sensor Channel="10" >
# <!-- A/D voltage 4, PAR/Irradiance, Biospherical/Licor -->
# <PAR_BiosphericalLicorChelseaSensor SensorID="42" >
# <SerialNumber>4361</SerialNumber>
# <CalibrationDate>18- Feb-2015</CalibrationDate>
# <M>1.00000000</M>
# <B>0.00000000</B>
# <CalibrationConstant>2941176471.00000000</CalibrationConstant>
# <Multiplier>1.00000000</Multiplier>
# <Offset>-0.52000000</Offset>
# </PAR_BiosphericalLicorChelseaSensor>
# </sensor>
# <sensor Channel="11" >
# <!-- A/D voltage 5, Free -->
# </sensor>
# <sensor Channel="12" >
# <!-- A/D voltage 6, Altimeter -->
# <AltimeterSensor SensorID="0" >
# <SerialNumber>VA-500 51520</SerialNumber>
# <CalibrationDate>10-Jul-15</CalibrationDate>
# <ScaleFactor>15.000</ScaleFactor>
# <Offset>0.000</Offset>
# </AltimeterSensor>
# </sensor>
# <sensor Channel="13" >
# <!-- A/D voltage 7, Free -->
# </sensor>
# <sensor Channel="14" >
# <!-- SPAR voltage, Unavailable -->
# </sensor>
# <sensor Channel="15" >
# <!-- SPAR voltage, SPAR/Surface Irradiance -->
# <SPAR_Sensor SensorID="51" >
# <SerialNumber>6357</SerialNumber>
# <CalibrationDate>02-17-2015</CalibrationDate>
# <ConversionFactor>1610.94330200</ConversionFactor>
# <RatioMultiplier>1.00000000</RatioMultiplier>
# </SPAR_Sensor>
# </sensor>
# </Sensors>
# datcnv_date = Jan 15 2017 06:59:34, 7.26.1.8
# datcnv_in = D:\Data\raw\nbp1701_004.hex D:\Data\raw\nbp1701_004.XMLCON
# datcnv_ox_hysteresis_correction = yes
# datcnv_ox_tau_correction = yes
# datcnv_bottle_scan_range_source = BL file
# datcnv_scans_per_bottle = 49
# bottlesum_date = Jan 15 2017 07:06:15, 7.26.1.8
# bottlesum_in = D:\Data\process\odf\nbp1701_004.ros D:\Data\raw\NBP1701_001.XMLCON
Bottle Date Potemp090C Sal00 Sigma-\E900 Sal11 PrDM DepSM T090C C0mS/cm T190C C1mS/cm Sbox0Mm/Kg FlECO-AFL CStarTr0 Latitude Longitude TimeJ AltM Spar Scan
Position Time
1 Dec 28 2016 1.4993 34.7191 27.7848 34.7229 2030.643 2001.890 1.6329 31.110722 1.6328 31.113613 177.978 0.0130 99.3677 -59.33321 -68.49718 363.212582 99.33 2.1637e+01 72242 (avg)
05:06:08 0.476 0.467 0.0003 0.000317 0.0002 0.000263 0.161 0.0044 0.0217 0.00001 0.00000 7.6294e-06 0.04 1.3203e-06 14 (sdev)
2 Dec 28 2016 1.7677 34.7162 27.7624 34.7196 1764.276 1740.383 1.8834 31.218207 1.8840 31.221402 175.511 0.0125 99.3550 -59.33332 -68.49702 363.217055 99.33 2.1637e+01 81519 (avg)
05:12:34 0.160 0.157 0.0009 0.000637 0.0005 0.000473 0.218 0.0048 0.0130 0.00000 0.00000 4.4048e-06 0.04 1.3203e-06 14 (sdev)
3 Dec 28 2016 1.9130 34.7074 27.7441 34.7108 1558.920 1538.553 2.0143 31.240385 2.0142 31.243110 173.492 0.0170 99.3513 -59.33346 -68.49682 363.220728 99.32 2.1637e+01 89134 (avg)
05:17:51 0.195 0.192 0.0001 0.000178 0.0001 0.000192 0.272 0.0015 0.0219 0.00000 0.00001 4.4048e-06 0.04 1.3203e-06 14 (sdev)
4 Dec 28 2016 2.0618 34.6821 27.7121 34.6854 1355.648 1338.580 2.1490 31.252503 2.1489 31.255066 169.143 0.0145 99.3333 -59.33360 -68.49671 363.224319 99.33 2.1597e+01 96580 (avg)
05:23:02 0.358 0.352 0.0001 0.000245 0.0001 0.000234 0.129 0.0036 0.0152 0.00000 0.00001 6.2294e-06 0.04 2.8100e-01 14 (sdev)
5 Dec 28 2016 2.1374 34.6632 27.6908 34.6664 1257.298 1241.759 2.2180 31.255858 2.2182 31.258608 167.135 0.0172 99.3322 -59.33370 -68.49662 363.226416 99.32 2.1637e+01 100930 (avg)
05:26:03 0.165 0.163 0.0009 0.000522 0.0009 0.000547 0.140 0.0010 0.0157 0.00000 0.00000 0.0000e+00 0.04 1.3203e-06 14 (sdev)
6 Dec 28 2016 2.2124 34.6415 27.6673 34.6448 1155.348 1141.345 2.2860 31.254268 2.2859 31.256840 165.499 0.0155 99.3242 -59.33368 -68.49662 363.228580 99.33 2.1637e+01 105417 (avg)
05:29:10 0.182 0.179 0.0001 0.000141 0.0002 0.000270 0.200 0.0035 0.0176 0.00000 0.00000 9.8495e-06 0.04 1.3203e-06 14 (sdev)
7 Dec 28 2016 2.2778 34.6142 27.6401 34.6175 1052.834 1040.327 2.3445 31.239225 2.3443 31.241771 164.953 0.0143 99.3115 -59.33366 -68.49662 363.230725 99.32 2.1637e+01 109864 (avg)
05:32:15 0.354 0.349 0.0003 0.000274 0.0004 0.000355 0.263 0.0036 0.0151 0.00000 0.00000 7.6294e-06 0.04 1.3203e-06 14 (sdev)
8 Dec 28 2016 2.3493 34.5698 27.5986 34.5732 952.489 941.399 2.4093 31.216492 2.4085 31.218588 165.431 0.0164 99.3046 -59.33360 -68.49671 363.232884 99.32 2.1637e+01 114342 (avg)