File name: Pandora122s1_Downsview_20250505_L2Fit_fout2c2d20240229p1-8.txt File generation date: 20250506T052000.3Z Data description: Level 2 spectral fitting results file Data file version: fout2c2p1-8 Local principal investigator: Vitali Fioletov Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 122 Spectrometer number: 1 Processing software version used: BlickP v1.8.75 Instrument operation file used: Pandora122_OF_v3d20240108.txt Instrument calibration file used: Pandora122s1_CF_v2d20240229.txt Level 1 file used: Pandora122s1_Downsview_20250505_L1_smca1c2d20240229p1-8.txt Full location name: Environment Canada HQ - Downsview Short location name: Downsview Country of location: Canada Location latitude [deg]: 43.7810 Location longitude [deg]: -79.4680 Location altitude [m]: 187 Local noon date: 20250505 Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are dark map for dark correction (replaced by immediate dark method), latency correction, matrix method stray light correction (replaced by simple method) Data caveats: OOB session based on clearance session 1 First and last pixel inside fitting window: 234 375 Nominal wavelengths inside fitting window [nm]: 305.0696 305.2108 305.3519 305.4931 305.6342 305.7753 305.9165 306.0576 306.1986 306.3397 306.4808 306.6218 306.7629 306.9039 307.0449 307.1859 307.3269 307.4679 307.6089 307.7499 307.8908 308.0317 308.1727 308.3136 308.4545 308.5954 308.7363 308.8771 309.0180 309.1589 309.2997 309.4405 309.5813 309.7221 309.8629 310.0037 310.1445 310.2852 310.4260 310.5667 310.7074 310.8481 310.9888 311.1295 311.2702 311.4109 311.5515 311.6922 311.8328 311.9734 312.1140 312.2546 312.3952 312.5358 312.6763 312.8169 312.9574 313.0980 313.2385 313.3790 313.5195 313.6600 313.8004 313.9409 314.0813 314.2218 314.3622 314.5026 314.6430 314.7834 314.9238 315.0641 315.2045 315.3448 315.4852 315.6255 315.7658 315.9061 316.0464 316.1866 316.3269 316.4671 316.6074 316.7476 316.8878 317.0280 317.1682 317.3084 317.4486 317.5887 317.7289 317.8690 318.0091 318.1492 318.2893 318.4294 318.5695 318.7096 318.8496 318.9897 319.1297 319.2697 319.4097 319.5497 319.6897 319.8297 319.9696 320.1096 320.2495 320.3894 320.5294 320.6693 320.8092 320.9490 321.0889 321.2288 321.3686 321.5084 321.6482 321.7881 321.9279 322.0676 322.2074 322.3472 322.4869 322.6267 322.7664 322.9061 323.0458 323.1855 323.3252 323.4648 323.6045 323.7441 323.8838 324.0234 324.1630 324.3026 324.4422 324.5818 324.7213 324.8609 --------------------------------------------------------------------------------------- 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 100-241: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting Columns 242-383: 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 --------------------------------------------------------------------------------------- SS 20250505T144903.3Z 9256.617399 326 1 31.99 2 41.12 120.11 113.84 38.07 0.00 1 0.00 1 0 17 1.168e-02 8.000e-03 6.375e-03 3.124e-03 2.037075e-01 1.604346e-03 2.494695e-03 -6.000000e+00 6.751032e-03 229.97 -2.00 3.57 -2.00 316.18 0.00e+00 2.440483e-04 1.715926e-04 1.339747e-04 -6.000000e+00 2.898420e-04 279.68 -2.00 20.00 -2.00 315.56 0.00e+00 1.326 0.000 302.00 328.00 3 6.2881e+00 4.1813e-03 1.6923e-02 -6.0000e+00 1.6894e-02 5.2508e-02 4.6428e-03 1.0649e-02 -6.0000e+00 1.8249e-02 -3.4067e-03 2.6957e-03 5.2172e-03 -6.0000e+00 1.0825e-02 -2.0837e-03 1.2728e-03 1.4624e-03 -6.0000e+00 4.6680e-03 2.0865e-04 -3.2231e-04 8.7234e-05 1.6608e-05 -6.0000e+00 3.0781e-04 -1.4209e-02 0.0000e+00 11 8 0 10 0 0 99.63 22.12 0.68 -0.01421 -0.01663 8 8 1 5 0 3998.510 26.83 20.00 22.12 22.95 2.3 1003.79 113 179 -668 -186 -3469 -2109 -3702 -2622 -640 1115 -1100 -1765 -1431 -1540 -1095 -2564 621 1556 423 3222 -103 438 873 1071 196 -300 191 -2181 1552 -680 1531 2287 1746 -570 -3103 -1479 -2497 -242 116 -339 611 345 661 -648 -46 -320 -692 -753 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671 1173 351 595 122 78 -195 -813 250 -1565 -313 -570 261 696 218 758 -816 -342 -1107 SS 20250505T154056.5Z 9256.653432 354 1 29.82 2 33.76 136.71 107.76 49.29 0.00 1 0.00 1 0 17 9.509e-03 6.931e-03 4.065e-03 2.300e-03 1.862517e-01 1.184825e-03 2.284788e-03 -6.000000e+00 5.496730e-03 229.98 -2.00 3.57 -2.00 315.69 0.00e+00 5.415389e-04 1.139288e-04 4.081802e-05 -6.000000e+00 2.359535e-04 279.69 -2.00 20.00 -2.00 315.10 0.00e+00 1.202 0.000 302.00 328.00 3 5.8982e+00 3.0717e-03 1.5404e-02 -6.0000e+00 1.3755e-02 4.3831e-02 3.4021e-03 9.7568e-03 -6.0000e+00 1.4857e-02 -8.3796e-03 1.9596e-03 4.7745e-03 -6.0000e+00 8.8131e-03 3.7118e-05 9.0597e-04 1.3679e-03 -6.0000e+00 3.8014e-03 3.6106e-04 -4.0127e-04 6.3830e-05 1.5728e-05 -6.0000e+00 2.5056e-04 -1.5708e-02 0.0000e+00 11 8 0 10 0 0 99.89 22.09 0.26 -0.01571 -0.01872 11 11 1 5 0 2710.640 26.83 20.00 22.09 23.25 2.3 1006.28 -384 112 -1680 -1805 -3150 -566 -188 515 1978 -2081 -333 -2633 722 -118 -505 226 -556 1423 360 1369 724 548 1949 899 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