File name: Pandora70s1_ChapelHillNC_20250119_L2Fit_fout2c1d20210323p1-8.txt File generation date: 20250122T050005.2Z Data description: Level 2 spectral fitting results file Data file version: fout2c1p1-8 Local principal investigator: Lukas Valin Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 70 Spectrometer number: 1 Processing software version used: BlickP v1.8.70 Instrument operation file used: Pandora70_OF_v7d20200416.txt Instrument calibration file used: Pandora70s1_CF_v1d20210323.txt Level 1 file used: Pandora70s1_ChapelHillNC_20250119_L1_smca1c1d20210323p1-8.txt Full location name: Duke Forest, Chapel Hill (NC) Short location name: ChapelHillNC Country of location: USA Location latitude [deg]: 35.9708 Location longitude [deg]: -79.0933 Location altitude [m]: 50 Local noon date: 20250119 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: 278 420 Nominal wavelengths inside fitting window [nm]: 305.0320 305.1727 305.3133 305.4539 305.5945 305.7351 305.8756 306.0162 306.1567 306.2973 306.4378 306.5783 306.7188 306.8593 306.9998 307.1402 307.2807 307.4211 307.5615 307.7020 307.8424 307.9828 308.1231 308.2635 308.4039 308.5442 308.6846 308.8249 308.9652 309.1055 309.2458 309.3861 309.5263 309.6666 309.8068 309.9470 310.0873 310.2275 310.3677 310.5078 310.6480 310.7882 310.9283 311.0685 311.2086 311.3487 311.4888 311.6289 311.7690 311.9090 312.0491 312.1891 312.3291 312.4692 312.6092 312.7492 312.8891 313.0291 313.1691 313.3090 313.4490 313.5889 313.7288 313.8687 314.0086 314.1484 314.2883 314.4282 314.5680 314.7078 314.8476 314.9874 315.1272 315.2670 315.4068 315.5465 315.6863 315.8260 315.9657 316.1054 316.2451 316.3848 316.5245 316.6641 316.8038 316.9434 317.0830 317.2226 317.3622 317.5018 317.6414 317.7810 317.9205 318.0601 318.1996 318.3391 318.4786 318.6181 318.7576 318.8970 319.0365 319.1759 319.3153 319.4548 319.5942 319.7336 319.8729 320.0123 320.1517 320.2910 320.4303 320.5696 320.7090 320.8482 320.9875 321.1268 321.2661 321.4053 321.5445 321.6838 321.8230 321.9622 322.1013 322.2405 322.3797 322.5188 322.6580 322.7971 322.9362 323.0753 323.2144 323.3534 323.4925 323.6316 323.7706 323.9096 324.0486 324.1876 324.3266 324.4656 324.6046 324.7435 324.8824 --------------------------------------------------------------------------------------- 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 20250119T183311.6Z 9150.773051 421 1 49.43 2 58.26 198.25 126.08 294.73 0.00 1 0.00 1 0 17 1.265e-02 5.685e-03 5.756e-03 1.990e-03 2.604002e-01 1.013606e-03 3.107141e-03 -6.000000e+00 7.303075e-03 224.35 -2.00 3.41 -2.00 317.06 0.00e+00 6.473469e-04 1.264906e-04 5.134665e-05 -6.000000e+00 2.948587e-04 279.42 -2.00 20.00 -2.00 316.77 0.00e+00 1.894 0.000 302.00 328.00 3 5.2056e+00 2.6394e-03 2.2784e-02 -6.0000e+00 1.8146e-02 4.6622e-02 2.9453e-03 1.2860e-02 -6.0000e+00 1.9728e-02 4.2080e-03 1.7966e-03 6.4586e-03 -6.0000e+00 1.1621e-02 -7.8453e-03 8.9902e-04 1.8975e-03 -6.0000e+00 4.9853e-03 3.1681e-04 2.0085e-04 5.8626e-05 2.2684e-05 -6.0000e+00 3.5457e-04 -4.5233e-02 1.1927e-04 11 1 0 11 8 0 99.99 23.02 0.28 -0.04523 -0.04372 83 18 1 8 0 595.510 20.00 23.02 18.50 27.26 27.05 32.0 952.00 900000 323 -4620 -7234 -550 -1281 3601 4050 -2611 727 -1192 -2624 -2808 -1706 -86 641 2396 741 490 964 1882 1978 1510 -419 609 -1079 986 -313 -273 808 509 -4066 1814 1467 -84 -529 -311 -1644 -377 -1517 83 -1210 296 -921 -842 -225 -192 -418 -658 61 877 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-79 361 318 -680 -43 -512 -996 SS 20250119T184555.0Z 9150.781887 429 1 0.62 2 59.13 201.59 128.34 297.32 0.00 1 0.00 1 0 17 1.090e-02 6.716e-03 8.465e-03 3.997e-03 2.652519e-01 2.051582e-03 3.204469e-03 -6.000000e+00 6.285540e-03 224.35 -2.00 3.41 -2.00 316.25 0.00e+00 4.831008e-04 2.105386e-04 3.876478e-05 -6.000000e+00 2.539304e-04 279.42 -2.00 20.00 -2.00 315.97 0.00e+00 1.942 0.000 302.00 328.00 3 2.3164e+00 5.2915e-03 2.3315e-02 -6.0000e+00 1.5618e-02 2.1704e-02 5.8880e-03 1.3122e-02 -6.0000e+00 1.6986e-02 -3.7492e-03 3.4566e-03 6.5736e-03 -6.0000e+00 1.0006e-02 -1.3009e-03 1.6562e-03 1.9143e-03 -6.0000e+00 4.2873e-03 5.4737e-03 -1.1387e-03 1.1574e-04 2.4331e-05 -6.0000e+00 3.0577e-04 -3.7326e-02 7.5775e-05 12 9 1 12 9 1 -27.57 23.03 0.14 -0.03733 -0.04588 3 70 1 8 0 152.650 20.00 23.03 19.42 27.26 27.05 31.8 955.90 900000 -3955 -952 -4965 935 -2631 1329 511 -156 -2419 -67 -138 -2289 -590 -868 1742 186 433 1361 803 2204 -1506 1706 -1232 1356 872 284 41 341 1549 1770 633 467 714 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