File name: Pandora297s1_Bologna-SPC_20260515_L2Fit_fout2c4d20251101p1-8.txt File generation date: 20260515T231759.9Z Data description: Level 2 spectral fitting results file Data file version: fout2c4p1-8 Local principal investigator: ---- Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 297 Spectrometer number: 1 Processing software version used: BlickP v1.8.88 Instrument operation file used: Pandora297_OF_v2d20250723.txt Instrument calibration file used: Pandora297s1_CF_v4d20251101.txt Level 1 file used: Pandora297s1_Bologna-SPC_20260515_L1_smca1c4d20251101p1-8.txt Full location name: Meteorological station "Giorgio Fea" at San Pietro Capofiume (Bologna) Short location name: Bologna-SPC Country of location: Italy Location latitude [deg]: 44.6530 Location longitude [deg]: 11.6230 Location altitude [m]: 12 Local noon date: 20260515 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: None First and last pixel inside fitting window: 201 343 Nominal wavelengths inside fitting window [nm]: 305.0835 305.2242 305.3649 305.5055 305.6462 305.7868 305.9275 306.0681 306.2087 306.3492 306.4898 306.6304 306.7709 306.9115 307.0520 307.1925 307.3330 307.4735 307.6140 307.7544 307.8949 308.0353 308.1757 308.3162 308.4566 308.5970 308.7373 308.8777 309.0181 309.1584 309.2987 309.4390 309.5793 309.7196 309.8599 310.0002 310.1404 310.2807 310.4209 310.5611 310.7014 310.8415 310.9817 311.1219 311.2621 311.4022 311.5423 311.6825 311.8226 311.9627 312.1028 312.2428 312.3829 312.5230 312.6630 312.8030 312.9430 313.0830 313.2230 313.3630 313.5030 313.6429 313.7829 313.9228 314.0627 314.2026 314.3425 314.4824 314.6222 314.7621 314.9019 315.0418 315.1816 315.3214 315.4612 315.6010 315.7408 315.8805 316.0203 316.1600 316.2997 316.4394 316.5791 316.7188 316.8585 316.9982 317.1378 317.2774 317.4171 317.5567 317.6963 317.8359 317.9754 318.1150 318.2546 318.3941 318.5336 318.6732 318.8127 318.9522 319.0916 319.2311 319.3706 319.5100 319.6494 319.7889 319.9283 320.0677 320.2071 320.3464 320.4858 320.6251 320.7645 320.9038 321.0431 321.1824 321.3217 321.4610 321.6002 321.7395 321.8787 322.0180 322.1572 322.2964 322.4356 322.5747 322.7139 322.8531 322.9922 323.1313 323.2705 323.4096 323.5487 323.6878 323.8268 323.9659 324.1049 324.2440 324.3830 324.5220 324.6610 324.8000 324.9390 --------------------------------------------------------------------------------------- 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: Spectrometer control temperature [°C], 999=no temperature signal Column 95: Auxiliary spectrometer temperature [°C], 999=no temperature signal Column 96: Temperature in head sensor [°C], 999=no temperature signal Column 97: Temperature at electronics board 1 [°C], 999=no temperature signal Column 98: Temperature at electronics board 2 [°C], 999=no temperature signal Column 99: Humidity in head sensor [%], -9=no humidity signal Column 100: Pressure in head sensor [hPa], -9=no pressure signal Columns 101-243: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting Columns 244-386: 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 20260515T045034.9Z 9631.201793 91 1 54.04 2 80.18 73.13 66.10 91.86 0.00 1 0.00 1 0 25 5.567e-01 2.150e-02 2.531e-01 5.467e-03 8.839049e-01 3.255393e-03 1.009036e-02 -6.000000e+00 3.542673e-01 230.92 -2.00 3.59 -2.00 321.52 0.00e+00 1.462275e-02 1.749894e-03 1.383022e-03 -6.000000e+00 1.704068e-02 281.16 -2.00 20.00 -2.00 321.02 0.00e+00 5.600 0.003 302.00 328.00 3 2.8302e+00 1.1517e-02 7.5362e-02 -6.0000e+00 8.8329e-01 6.7258e-01 1.5710e-02 5.2184e-02 -6.0000e+00 9.5654e-01 -7.8799e-01 1.5100e-02 2.8751e-02 -6.0000e+00 5.6561e-01 3.1302e-01 6.9993e-03 1.7178e-02 -6.0000e+00 2.3167e-01 3.9004e-05 -1.4311e-03 1.5794e-04 2.6285e-04 -6.0000e+00 1.9497e-02 -2.1425e-03 0.0000e+00 12 9 8 11 32 0 97.54 24.48 0.38 -0.00214 -0.01290 29 3 4 8 0 1863.050 20.03 24.48 17.78 33.75 33.00 4.3 993.98 -248833 -2356 -82342 900000 900000 900000 -271046 53813 -186384 -94230 -61703 -143180 -127456 -108849 -44947 -113454 -21264 8100 900000 -102162 224159 2259 -56048 -26436 -33685 -47899 900000 900000 21567 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204 378 -279 -171 632 231 986 604 1123 28 649 1248 485 719 588 891 1290 689 439 28 125 -113 -157 476 791 -321 -592 -22 -7 340 159 68 625 -282 396 -1404 -356 -1857 -1489 -875 -763 -113 -1001 -1181 -258 55 792 744 945 2071 1180 379 -194 -904 -1013 -841 -211 -427 260 -221 -927 -763 -537 -296 150 -379 -581 -497 -292 846 881 1333 837 581 -1000 -507 -110 -245 199 478 1187 1394 990 1528 888 970 -232 270 227 376 285 -137 -439 -861 -274 -733 -938 -775 SS 20260515T102248.0Z 9631.432500 252 1 55.05 2 27.54 155.33 29.01 199.05 0.00 1 0.00 1 0 17 1.717e-02 1.087e-02 6.325e-03 3.304e-03 2.150357e-01 1.813509e-03 2.659758e-03 -6.000000e+00 1.077405e-02 230.94 -2.00 3.59 -2.00 316.03 0.00e+00 -6.887978e-04 1.923807e-04 7.478441e-05 -6.000000e+00 4.696663e-04 281.18 -2.00 20.00 -2.00 315.37 0.00e+00 1.127 0.000 302.00 328.00 3 7.1950e+00 4.7235e-03 1.6277e-02 -6.0000e+00 2.6934e-02 7.5693e-02 5.2507e-03 1.1466e-02 -6.0000e+00 2.9112e-02 -1.9901e-02 2.9985e-03 5.5887e-03 -6.0000e+00 1.7294e-02 6.0416e-03 1.3211e-03 1.6050e-03 -6.0000e+00 7.1173e-03 9.7250e-05 4.3816e-04 1.1301e-04 2.4258e-05 -6.0000e+00 5.7849e-04 8.3514e-04 0.0000e+00 12 8 8 10 0 0 99.92 25.10 -0.55 0.00084 0.00413 23 2 1 8 0 2393.230 20.00 25.10 21.71 34.25 33.25 4.3 1009.39 -6025 -654 -1095 -2398 1329 -3034 2973 352 -1025 -610 -2413 123 137 -2666 1177 -2558 -830 2396 6137 -198 1948 885 -632 2634 881 2168 4611 4821 2218 1385 -1469 760 845 -2280 -2097 -1475 -1641 -841 1291 -1426 -10239 -151 784 -1937 40 -354 1026 93 -705 253 -192 592 248 2836 -1069 519 2449 23 1487 1191 -418 1649 1850 103 101 163 -1162 -992 1451 1694 262 -223 352 56 268 -473 -181 275 -599 963 -1645 694 -1027 -1311 -933 -247 913 -147 -717 629 -823 616 186 680 2431 522 -22 -797 -739 -147 -937 -374 -1461 -623 21 -700 -242 -52 -407 177 -115 -238 -557 -84 962 526 904 89 -27 0 119 76 170 35 -199 176 1010 277 1559 -238 1573 -442 613 -698 167 380 -152 143 151 106 -1157 -133 -813 -1366 -148 -247 -513 254 -589 572 76 -242 -149 -606 31 38 -838 392 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