File name: Pandora289s1_DeBilt_20250917_L2Fit_fout2c1d20250508p1-8.txt
File generation date: 20260519T142447.2Z
Data description: Level 2 spectral fitting results file
Data file version: fout2c1p1-8
Local principal investigator: Ankie Piters
Network principal investigator: Alexander Cede
Instrument type: Pandora
Instrument number: 289
Spectrometer number: 1
Processing software version used: BlickP v1.8.88
Instrument operation file used: Pandora289_OF_v3d20240910.txt
Instrument calibration file used: Pandora289s1_CF_v1d20250508.txt
Level 1 file used: Pandora289s1_DeBilt_20250917_L1_smca1c1d20250508p1-8.txt
Full location name: Royal Netherlands Meteorological Institute (KNMI), De Bilt
Short location name: DeBilt
Country of location: Netherlands
Location latitude [deg]: 52.1012
Location longitude [deg]: 5.1783
Location altitude [m]: 20
Local noon date: 20250917
Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are latency correction, radiometric temperature correction, matrix method stray light correction (replaced by simple method)
Data caveats: None
First and last pixel inside fitting window: 199 341
Nominal wavelengths inside fitting window [nm]: 305.1323 305.2727 305.4130 305.5534 305.6937 305.8340 305.9743 306.1146 306.2549 306.3952 306.5354 306.6757 306.8159 306.9561 307.0964 307.2366 307.3768 307.5169 307.6571 307.7973 307.9374 308.0776 308.2177 308.3578 308.4979 308.6380 308.7781 308.9182 309.0582 309.1983 309.3383 309.4783 309.6183 309.7583 309.8983 310.0383 310.1783 310.3182 310.4582 310.5981 310.7380 310.8780 311.0179 311.1577 311.2976 311.4375 311.5773 311.7172 311.8570 311.9968 312.1366 312.2764 312.4162 312.5560 312.6958 312.8355 312.9753 313.1150 313.2547 313.3944 313.5341 313.6738 313.8135 313.9531 314.0928 314.2324 314.3720 314.5116 314.6512 314.7908 314.9304 315.0700 315.2095 315.3491 315.4886 315.6281 315.7677 315.9072 316.0466 316.1861 316.3256 316.4650 316.6045 316.7439 316.8833 317.0227 317.1621 317.3015 317.4409 317.5803 317.7196 317.8589 317.9983 318.1376 318.2769 318.4162 318.5555 318.6947 318.8340 318.9732 319.1125 319.2517 319.3909 319.5301 319.6693 319.8085 319.9476 320.0868 320.2259 320.3650 320.5042 320.6433 320.7824 320.9214 321.0605 321.1996 321.3386 321.4777 321.6167 321.7557 321.8947 322.0337 322.1727 322.3116 322.4506 322.5895 322.7285 322.8674 323.0063 323.1452 323.2841 323.4229 323.5618 323.7006 323.8395 323.9783 324.1171 324.2559 324.3947 324.5335 324.6723 324.8110 324.9498
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Column 1: Two letter code of measurement routine
Column 2: UT date and time for center-time of measurement, yyyymmddThhmmssZ (ISO 8601)
Column 3: Fractional days since 1-Jan-2000 midnight for center-time of measurement
Column 4: Routine count (1 for the first routine of the day, 2 for the second, etc.)
Column 5: Repetition count (1 for the first set in the routine, 2 for the second, etc.)
Column 6: Total duration of measurement set in seconds
Column 7: Data processing type index
Column 8: Solar zenith angle for center-time of measurement in degree
Column 9: Solar azimuth for center-time of measurement in degree, 0=north, increases clockwise
Column 10: Lunar zenith angle for center-time of measurement in degree
Column 11: Lunar azimuth for center-time of measurement in degree, 0=north, increases clockwise
Column 12: Pointing zenith angle in degree, absolute or relative (see next column), 999=tracker not used
Column 13: Zenith pointing mode: zenith angle is... 0=absolute, 1=relative to sun, 2=relative to moon
Column 14: Pointing azimuth in degree, increases clockwise, absolute (0=north) or relative (see next column), 999=tracker not used
Column 15: Azimuth pointing mode: like zenith angle mode but also fixed scattering angles relative to sun (3) or moon (4)
Column 16: Fitting result index: 0=no error or warning, 1, 2=warning, >2=error
Column 17: Number of function evaluations used, 0=linear fitting or fitting not successful or no fitting done
Column 18: rms of unweighted fitting residuals, -9=fitting not successful
Column 19: Normalized rms of fitting residuals weighted with independent uncertainty, -9=fitting not successful or no uncertainty used
Column 20: Expected rms based on independent uncertainty, -9=fitting not successful or no uncertainty given
Column 21: Expected normalized weighted rms based on independent uncertainty, -9=fitting not successful or no uncertainty given
Column 22: Ozone slant column amount [moles per square meter], -9e99=fitting not successful
Column 23: Independent uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -5=no independent uncertainty input was given, -9=spectral fitting not successful
Column 24: Structured uncertainty of ozone slant column amount [moles per square meter], -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful
Column 25: Common uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -6=no common uncertainty input was given, -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful
Column 26: rms-based uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no rms-based uncertainty could be retrieved, -9=spectral fitting not successful
Column 27: Ozone effective temperature [K]
Column 28: Independent uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -5=no independent uncertainty input was given, -9=spectral fitting not successful
Column 29: Structured uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -9=spectral fitting not successful
Column 30: Common uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no common uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -6=no common uncertainty input was given, -9=spectral fitting not successful
Column 31: Effective ozone fitting wavelength [nm], -9=fitting not successful
Column 32: Diffuse correction applied before fitting at effective fitting wavelength for ozone [%], 0=no diffuse correction applied or fitting not requested, >0=measured diffuse correction, <0=(negative value of) calculated diffuse correction
Column 33: Sulfur dioxide slant column amount [moles per square meter], -9e99=fitting not successful
Column 34: Independent uncertainty of sulfur dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -5=no independent uncertainty input was given, -9=spectral fitting not successful
Column 35: Structured uncertainty of sulfur dioxide slant column amount [moles per square meter], -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful
Column 36: Common uncertainty of sulfur dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -6=no common uncertainty input was given, -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful
Column 37: rms-based uncertainty of sulfur dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no rms-based uncertainty could be retrieved, -9=spectral fitting not successful
Column 38: Sulfur dioxide effective temperature [K]
Column 39: Independent uncertainty of sulfur dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -5=no independent uncertainty input was given, -9=spectral fitting not successful
Column 40: Structured uncertainty of sulfur dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -9=spectral fitting not successful
Column 41: Common uncertainty of sulfur dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no common uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -6=no common uncertainty input was given, -9=spectral fitting not successful
Column 42: Effective sulfur dioxide fitting wavelength [nm], -9=fitting not successful
Column 43: Diffuse correction applied before fitting at effective fitting wavelength for sulfur dioxide [%], 0=no diffuse correction applied or fitting not requested, >0=measured diffuse correction, <0=(negative value of) calculated diffuse correction
Column 44: Molecular scattering air mass factor used for molecular scattering subtraction before the fitting
Column 45: Estimated uncertainty of molecular scattering air mass factor, -9=molecular scattering was not subtracted before the fitting
Column 46: Lower limit used for wavelength scaling [nm]
Column 47: Upper limit used for wavelength scaling [nm]
Column 48: Order of smoothing polynomial
Column 49: Smoothing polynomial coefficient, order 0
Column 50: Independent uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful
Column 51: Structured uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful
Column 52: Common uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful
Column 53: rms-based uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful
Column 54: Smoothing polynomial coefficient, order 1
Column 55: Independent uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful
Column 56: Structured uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful
Column 57: Common uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful
Column 58: rms-based uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful
Column 59: Smoothing polynomial coefficient, order 2
Column 60: Independent uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful
Column 61: Structured uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful
Column 62: Common uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful
Column 63: rms-based uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful
Column 64: Smoothing polynomial coefficient, order 3
Column 65: Independent uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful
Column 66: Structured uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful
Column 67: Common uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful
Column 68: rms-based uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful
Column 69: Mean value of measured data inside fitting window [same units as measurements]
Column 70: Wavelength change polynomial coefficient, order 0
Column 71: Independent uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful
Column 72: Structured uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful
Column 73: Common uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful
Column 74: rms-based uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful
Column 75: L1 based wavelength change coefficient, order 0, -9=no L1 wavelength change determination
Column 76: L1 based wavelength change coefficient, order 1, -9=no L1 wavelength change determination
Column 77: L2Fit data quality flag: 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality
Column 78: Sum over 2^i using those i, for which the corresponding L2Fit data quality parameter exceeds the DQ1 limit, 0=L1 data quality above 0, 1=Spectral fitting was not successful, 2=Wavelength shift too large, 3=Normalized rms of fitting residuals weighted with independent uncertainty too large
Column 79: Sum over 2^i using those i, for which the corresponding L2Fit data quality parameter exceeds the DQ2 limit (same parameters as for DQ1)
Column 80: L1 data quality flag: 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality
Column 81: Sum over 2^i using those i, for which the corresponding L1 data quality parameter exceeds the DQ1 limit, 0=Saturated data, 1=Too few dark counts measurements, 2=No temperature given or effective temperature too different from the reference temperature, 3=Dark count too high, 4=Unsuccessful dark background fitting, 5=The dark count differs significantly from the dark map for too many pixels, 6=Absolute value of estimated average residual stray light level too high, 7=Although attempted, no wavelength change could be retrieved, 8=Absolute value of retrieved wavelength shift too large, 9=Retrieved wavelength shift differs too much from the shift predicted by the effective temperature
Column 82: Sum over 2^i using those i, for which the corresponding L1 data quality parameter exceeds the DQ2 limit (same parameters as for DQ1)
Column 83: Atmospheric variability [%], 999=no atmospheric variability was determined
Column 84: Wavelength effective temperature [°C], 999=no effective temperature given
Column 85: Estimated average residual stray light level [%] (only valid for stray light correction methods 2 and higher)
Column 86: Retrieved wavelength shift from L1 data [nm], -9=no wavelength change determination
Column 87: Retrieved total wavelength shift [nm], -9=no wavelength change fitting
Column 88: Number of bright count cycles
Column 89: Number of dark count cycles
Column 90: Effective position of filterwheel #1, 0=filterwheel not used, 1-9 are valid positions
Column 91: Effective position of filterwheel #2, 0=filterwheel not used, 1-9 are valid positions
Column 92: Sum over 2^i, 0=spectra were interpolated in time, 1=spectra are corrected for off-target signal
Column 93: Integration time [ms]
Column 94: Temperature at electronics board [°C], 999=no temperature signal
Column 95: Spectrometer control temperature [°C], 999=no temperature signal
Column 96: Auxiliary spectrometer temperature [°C], 999=no temperature signal
Column 97: Temperature in head sensor [°C], 999=no temperature signal
Column 98: Humidity in head sensor [%], -9=no humidity signal
Column 99: Pressure in head sensor [hPa], -9=no pressure signal
Columns 100-242: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting
Columns 243-385: Normalized slant column residuals weighted with independent instrumental uncertainty for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting, 0=no independent instrumental uncertainty was given
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SU 20250917T092511.5Z 9391.392494 1808 1 53.43 2 56.74 140.52 32.22 211.80 0.00 1 0.00 1 0 25 3.733e-02 1.943e-02 6.910e-03 3.478e-03 2.182018e-01 1.774235e-03 2.797940e-03 -6.000000e+00 2.142738e-02 228.48 -2.00 3.84 -2.00 316.11 0.00e+00 3.355242e-04 1.762973e-04 3.741858e-05 -6.000000e+00 8.628409e-04 280.03 -2.00 20.00 -2.00 315.79 0.00e+00 1.817 0.000 302.00 328.00 3 6.7497e+00 4.6081e-03 2.1757e-02 -6.0000e+00 5.3728e-02 1.2167e-01 5.1488e-03 1.2032e-02 -6.0000e+00 5.8585e-02 -1.7324e-02 2.9812e-03 5.9088e-03 -6.0000e+00 3.4418e-02 -2.8690e-04 1.3659e-03 1.6671e-03 -6.0000e+00 1.4285e-02 7.7587e-05 -4.8666e-04 9.9657e-05 1.9130e-05 -6.0000e+00 1.0200e-03 1.0849e-02 0.0000e+00 12 9 8 11 8 0 99.98 24.68 0.43 0.01085 0.00719 17 2 1 5 0 3142.570 34.00 20.01 24.68 19.82 0.0 968.36 -8754 573 5382 14773 2178 -8984 13300 -7672 -1190 15341 3467 -1466 -3174 8880 -6501 -3158 -5082 8330 -489 3424 -1124 -553 -1081 1449 -1477 -4717 3040 -28 -8200 4704 -2125 11790 2163 -4950 -6322 2393 -479 -2473 -3942 2329 634 -1953 191 -2111 1068 -995 2799 -665 -1415 -3173 -1140 3829 1444 -663 1098 2060 2010 1670 -3708 896 1311 5586 5519 5200 763 -2239 -3433 -829 833 2767 -1850 -553 809 454 677 -2231 -4357 -5386 -2437 -1642 -1545 -361 -2929 -542 355 1449 -104 -34 838 937 2130 -1752 777 -863 -1706 -1258 785 692 627 -173 -1324 -1514 -1834 159 -751 -734 -581 -1131 212 1430 1364 2061 2028 2325 -1127 -1161 -1659 -474 1979 1901 1147 -502 -149 1104 968 705 -2458 -3376 -1212 402 1387 -1405 -2139 -1436 780 -1641 1328 1545 1645 522 -272 -951 -900 -2102 130 1119 2535 384 -1743 2283 -1842 -285 3117 785 -367 -911 2581 -2209 -1094 -1844 2717 -180 1243 -428 -208 -417 577 -638 -2113 1206 -11 -3221 1765 -826 4771 914 -2195 -2690 1028 -216 -1370 -2389 1481 439 -1435 139 -1572 768 -720 1895 -450 -945 -2186 -811 2766 1122 -542 903 1712 1680 1382 -3181 736 1118 4921 4822 4712 700 -2095 -2979 -699 759 2549 -1915 -580 825 445 611 -2009 -3623 -4377 -2045 -1534 -1485 -371 -3267 -621 399 1723 -133 -44 1062 1137 2360 -1954 773 -861 -1823 -1473 922 884 840 -228 -1632 -1846 -2190 181 -926 -960 -789 -1495 291 2054 2036 3053 2866 3234 -1488 -1449 -2080 -616 2690 2742 1596 -701 -214 1504 1259 869 -2974 -4135 -1542 540 1921 -2025 -2952 -2051 1150 -2597 2102 2476 2642 835 -422 -1424 -1327