File name: Pandora282s1_Ilo-UNAM_20250126_L2Fit_fout2c2d20240531p1-8.txt File generation date: 20250327T112123.4Z 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: 282 Spectrometer number: 1 Processing software version used: BlickP v1.8.75 Instrument operation file used: Pandora282_OF_v2d20240118.txt Instrument calibration file used: Pandora282s1_CF_v2d20240531.txt Level 1 file used: Pandora282s1_Ilo-UNAM_20250126_L1_smca1c2d20240531p1-8.txt Full location name: Grupo de Investigacion en Ciencias de la Atmosfera, UNAM, Peru Short location name: Ilo-UNAM Country of location: Peru Location latitude [deg]: -17.6020 Location longitude [deg]: -71.3389 Location altitude [m]: 85 Local noon date: 20250126 Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are 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: 202 344 Nominal wavelengths inside fitting window [nm]: 305.0356 305.1762 305.3168 305.4574 305.5979 305.7385 305.8790 306.0196 306.1601 306.3006 306.4411 306.5816 306.7221 306.8625 307.0030 307.1435 307.2839 307.4243 307.5647 307.7051 307.8455 307.9859 308.1263 308.2666 308.4070 308.5473 308.6876 308.8279 308.9682 309.1085 309.2488 309.3891 309.5293 309.6696 309.8098 309.9500 310.0902 310.2304 310.3706 310.5108 310.6510 310.7911 310.9313 311.0714 311.2115 311.3516 311.4917 311.6318 311.7719 311.9120 312.0520 312.1921 312.3321 312.4721 312.6121 312.7521 312.8921 313.0321 313.1721 313.3120 313.4520 313.5919 313.7318 313.8717 314.0116 314.1515 314.2914 314.4312 314.5711 314.7109 314.8508 314.9906 315.1304 315.2702 315.4100 315.5497 315.6895 315.8293 315.9690 316.1087 316.2484 316.3881 316.5278 316.6675 316.8072 316.9469 317.0865 317.2261 317.3658 317.5054 317.6450 317.7846 317.9242 318.0637 318.2033 318.3428 318.4824 318.6219 318.7614 318.9009 319.0404 319.1799 319.3193 319.4588 319.5982 319.7377 319.8771 320.0165 320.1559 320.2953 320.4347 320.5740 320.7134 320.8527 320.9921 321.1314 321.2707 321.4100 321.5493 321.6885 321.8278 321.9671 322.1063 322.2455 322.3847 322.5239 322.6631 322.8023 322.9415 323.0806 323.2198 323.3589 323.4980 323.6372 323.7763 323.9153 324.0544 324.1935 324.3325 324.4716 324.6106 324.7496 324.8887 --------------------------------------------------------------------------------------- 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 --------------------------------------------------------------------------------------- SS 20250126T132610.3Z 9157.559841 245 1 6.92 2 50.16 99.80 16.81 133.83 0.00 1 0.00 1 0 17 8.817e-03 6.975e-03 1.836e-03 1.331e-03 1.796530e-01 6.661168e-04 1.916499e-03 -6.000000e+00 4.892188e-03 225.50 -2.00 3.04 -2.00 314.66 0.00e+00 6.186244e-04 5.654837e-05 1.378111e-05 -6.000000e+00 2.268140e-04 293.43 -2.00 20.00 -2.00 313.98 0.00e+00 1.558 0.000 302.00 328.00 3 3.0113e+00 1.6910e-03 1.7192e-02 -6.0000e+00 1.2059e-02 1.6277e-02 1.8794e-03 8.0033e-03 -6.0000e+00 1.3077e-02 1.6675e-03 1.0826e-03 3.8983e-03 -6.0000e+00 7.8509e-03 -4.7102e-03 4.8917e-04 1.1614e-03 -6.0000e+00 3.4416e-03 4.7272e-03 2.7809e-05 3.4951e-05 1.3550e-05 -6.0000e+00 2.2008e-04 1.2091e-02 0.0000e+00 12 9 1 12 9 1 93.93 25.64 0.38 0.01209 0.01230 17 78 1 5 0 383.980 33.75 20.00 25.64 34.91 3.7 1054.47 766 231 444 -1447 -2601 -2158 -258 747 778 164 -1380 -1179 -438 434 684 262 400 600 1021 979 514 565 849 829 637 405 273 -406 -455 -160 955 939 1837 -580 -2786 -3019 -2525 -1661 -517 -17 -284 -1176 -393 -895 51 -231 -687 -816 -619 -400 383 597 804 1008 707 909 823 734 494 299 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-954 -961 SS 20250126T133103.6Z 9157.563237 248 1 30.09 2 49.01 99.59 16.01 136.21 0.00 1 0.00 1 0 17 8.776e-03 6.718e-03 9.938e-04 7.240e-04 1.764514e-01 3.625611e-04 1.891984e-03 -6.000000e+00 4.869542e-03 225.50 -2.00 3.04 -2.00 314.63 0.00e+00 4.279091e-04 3.054682e-05 1.740640e-05 -6.000000e+00 2.257565e-04 293.43 -2.00 20.00 -2.00 313.94 0.00e+00 1.522 0.000 302.00 328.00 3 3.3524e+00 9.1999e-04 1.6822e-02 -6.0000e+00 1.2003e-02 2.0041e-02 1.0220e-03 7.8565e-03 -6.0000e+00 1.3016e-02 3.7645e-04 5.8903e-04 3.8429e-03 -6.0000e+00 7.8145e-03 -3.8843e-03 2.6631e-04 1.1108e-03 -6.0000e+00 3.4258e-03 3.5004e-03 7.7417e-05 1.9007e-05 1.3525e-05 -6.0000e+00 2.1904e-04 1.1688e-02 0.0000e+00 11 9 0 11 8 0 99.84 25.66 0.41 0.01169 0.01227 64 64 1 5 0 470.110 33.75 20.00 25.66 35.33 3.7 1057.27 315 436 127 -1721 -2796 -2443 -486 733 1259 273 -1112 -1284 -683 213 1068 217 342 336 807 1392 638 409 1079 1073 662 733 343 -138 -741 -105 929 1073 2049 -105 -2768 -2878 -2424 -1543 -759 -223 -648 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530 319 679 409 -84 608 404 467 197 -149 86 -136 -84 61 69 378 366 -33 -392 -833 -966 SS 20250126T133548.6Z 9157.566535 251 1 30.10 2 47.89 99.40 15.26 138.78 0.00 1 0.00 1 0 17 9.291e-03 7.055e-03 1.981e-03 1.392e-03 1.733958e-01 6.959421e-04 1.851547e-03 -6.000000e+00 5.155401e-03 225.50 -2.00 3.04 -2.00 314.78 0.00e+00 4.451664e-04 6.018039e-05 1.946048e-05 -6.000000e+00 2.390072e-04 293.44 -2.00 20.00 -2.00 314.08 0.00e+00 1.489 0.000 302.00 328.00 3 4.6284e+00 1.7690e-03 1.6469e-02 -6.0000e+00 1.2708e-02 3.2786e-02 1.9661e-03 7.7086e-03 -6.0000e+00 1.3780e-02 1.6492e-04 1.1318e-03 3.7711e-03 -6.0000e+00 8.2732e-03 -3.7717e-03 5.1506e-04 1.0934e-03 -6.0000e+00 3.6270e-03 1.0098e-03 7.7660e-05 3.6653e-05 1.3042e-05 -6.0000e+00 2.3190e-04 1.1591e-02 0.0000e+00 11 9 0 11 8 0 99.10 25.67 0.29 0.01159 0.01217 23 23 1 5 0 1308.290 33.75 20.00 25.67 35.51 3.7 1057.98 330 201 445 -1167 -3872 -1027 -1134 443 867 62 -1406 -1116 -1259 25 1105 641 188 495 722 1490 600 448 976 869 852 983 -6 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