File name: Pandora284s1_Downsview_20250402_L2Fit_fout2c2d20241105p1-8.txt File generation date: 20250905T151552.1Z Data description: Level 2 spectral fitting results file Data file version: fout2c2p1-8 Local principal investigator: Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 284 Spectrometer number: 1 Processing software version used: BlickP v1.8.75 Instrument operation file used: Pandora284_OF_v1d20240708.txt Instrument calibration file used: Pandora284s1_CF_v2d20241105.txt Level 1 file used: Pandora284s1_Downsview_20250402_L1_smca1c2d20241105p1-8.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: 20250402 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 off of session 1 First and last pixel inside fitting window: 195 338 Nominal wavelengths inside fitting window [nm]: 305.0011 305.1417 305.2823 305.4229 305.5635 305.7040 305.8446 305.9851 306.1256 306.2662 306.4067 306.5471 306.6876 306.8281 306.9686 307.1090 307.2494 307.3899 307.5303 307.6707 307.8111 307.9515 308.0918 308.2322 308.3725 308.5129 308.6532 308.7935 308.9338 309.0741 309.2144 309.3547 309.4949 309.6352 309.7754 309.9156 310.0559 310.1961 310.3363 310.4764 310.6166 310.7568 310.8969 311.0371 311.1772 311.3173 311.4574 311.5975 311.7376 311.8777 312.0177 312.1578 312.2978 312.4378 312.5779 312.7179 312.8579 312.9978 313.1378 313.2778 313.4177 313.5577 313.6976 313.8375 313.9774 314.1173 314.2572 314.3970 314.5369 314.6768 314.8166 314.9564 315.0962 315.2360 315.3758 315.5156 315.6554 315.7951 315.9349 316.0746 316.2143 316.3541 316.4938 316.6335 316.7731 316.9128 317.0525 317.1921 317.3317 317.4714 317.6110 317.7506 317.8902 318.0297 318.1693 318.3089 318.4484 318.5879 318.7275 318.8670 319.0065 319.1460 319.2854 319.4249 319.5644 319.7038 319.8432 319.9827 320.1221 320.2615 320.4009 320.5402 320.6796 320.8189 320.9583 321.0976 321.2369 321.3762 321.5155 321.6548 321.7941 321.9333 322.0726 322.2118 322.3511 322.4903 322.6295 322.7687 322.9079 323.0470 323.1862 323.3253 323.4645 323.6036 323.7427 323.8818 324.0209 324.1600 324.2990 324.4381 324.5771 324.7162 324.8552 324.9942 --------------------------------------------------------------------------------------- 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 100-243: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting Columns 244-387: 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 20250402T134804.6Z 9223.575054 144 1 29.70 2 60.54 113.46 85.23 57.61 0.00 1 0.00 1 0 17 1.548e-02 5.740e-03 9.667e-03 2.263e-03 3.069941e-01 1.121182e-03 3.708072e-03 -6.000000e+00 8.691839e-03 227.14 -2.00 3.57 -2.00 317.89 0.00e+00 7.896668e-04 1.851220e-04 1.301155e-04 -6.000000e+00 3.745350e-04 275.91 -2.00 20.00 -2.00 317.27 0.00e+00 2.025 0.000 302.00 328.00 3 4.2077e+00 2.9833e-03 2.5504e-02 -6.0000e+00 2.1617e-02 3.5914e-02 3.3761e-03 1.5925e-02 -6.0000e+00 2.3548e-02 -2.9866e-03 2.1418e-03 7.8857e-03 -6.0000e+00 1.3973e-02 -5.0391e-03 1.0952e-03 2.2994e-03 -6.0000e+00 5.9147e-03 7.2731e-04 -4.3982e-04 6.3655e-05 2.3671e-05 -6.0000e+00 4.0454e-04 -3.1366e-02 4.5967e-05 11 1 0 11 8 0 99.61 21.78 0.38 -0.03137 -0.03467 21 21 1 5 0 1414.030 29.25 15.00 21.78 5.06 2.3 892.62 900000 -6770 -4759 -1249 -4799 -4791 -3023 -4999 1783 -3773 -5023 -4557 -1985 -2830 457 154 1496 625 839 1479 376 1251 1235 320 834 -1879 -1168 -712 -809 270 767 -131 1232 1393 -1004 -2706 -4014 -3247 366 -473 -302 209 -328 -232 -406 445 -296 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125 -83 -301 117 -740 9 15 -200 783 -50 111 114 -577 -382 -491 SS 20250402T140208.3Z 9223.584818 153 1 29.43 2 58.24 116.52 83.13 59.77 0.00 1 0.00 1 0 17 1.212e-02 5.360e-03 6.797e-03 1.947e-03 2.864712e-01 9.674168e-04 3.489826e-03 -6.000000e+00 6.806737e-03 227.14 -2.00 3.57 -2.00 317.51 0.00e+00 5.886701e-04 1.426186e-04 1.031188e-04 -6.000000e+00 2.932812e-04 275.91 -2.00 20.00 -2.00 316.89 0.00e+00 1.893 0.000 302.00 328.00 3 4.1441e+00 2.5562e-03 2.3836e-02 -6.0000e+00 1.6929e-02 2.7672e-02 2.8794e-03 1.4871e-02 -6.0000e+00 1.8440e-02 -4.0579e-03 1.7677e-03 7.3540e-03 -6.0000e+00 1.0942e-02 -3.0468e-03 8.8788e-04 2.1108e-03 -6.0000e+00 4.6321e-03 9.1249e-04 -3.9300e-04 5.4576e-05 2.2054e-05 -6.0000e+00 3.1677e-04 -3.1580e-02 5.5288e-05 11 1 0 11 8 0 94.74 21.78 0.27 -0.03158 -0.03453 19 19 1 5 0 1548.960 29.25 15.00 21.78 5.54 2.3 893.48 900000 -2388 -4743 -3079 -6264 -3385 -4085 552 1574 -1851 -2857 -1768 -1065 201 -318 1312 -317 241 1200 -168 25 363 1002 1554 1681 678 -221 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-563 242 810 841 750 699 90 -122 67 -24 186 -97 -290 94 209 134 432 384 -96 196 780 156 360 -114 -78 -250 -165 34 -150 444 224 150 0 -604 -355 -706 SS 20250402T141240.9Z 9223.592140 156 1 29.73 2 56.55 118.91 81.53 61.37 0.00 1 0.00 1 0 17 1.161e-02 5.469e-03 3.745e-03 1.313e-03 2.739596e-01 6.520539e-04 3.339950e-03 -6.000000e+00 6.521054e-03 227.14 -2.00 3.57 -2.00 317.06 0.00e+00 4.822870e-04 8.661135e-05 8.185750e-05 -6.000000e+00 2.808804e-04 275.91 -2.00 20.00 -2.00 316.45 0.00e+00 1.809 0.000 302.00 328.00 3 3.6443e+00 1.7125e-03 2.2769e-02 -6.0000e+00 1.6218e-02 1.7239e-02 1.9258e-03 1.4202e-02 -6.0000e+00 1.7666e-02 -3.8432e-03 1.1549e-03 7.0106e-03 -6.0000e+00 1.0482e-02 -2.8015e-03 5.6663e-04 1.9969e-03 -6.0000e+00 4.4384e-03 1.6733e-03 -1.1432e-04 3.6452e-05 2.1799e-05 -6.0000e+00 3.0337e-04 -3.1940e-02 1.0324e-04 10 0 0 10 0 0 99.42 21.79 0.39 -0.03194 -0.03280 35 35 1 5 0 849.230 29.25 15.00 21.79 5.68 2.2 894.22 900000 -1413 -1493 -3105 -6299 -3742 -4316 -1938 199 -1078 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