De Backer H. DOBSON UCCLE TOTALCOL 01-FEB-1973 00:00:0028-FEB-1973 23:59:590001 30 1010 Hugo De Backer Uccle; Royal Meteorological Institute Belgium Dobson Spectrophotometer Instrument No.40 NDSC 1 1 1973 02 01 2002 05 21 0 Day of year 2 1.000 1.0E+18 9.999 99.999 O3 Air Mass Factor O3 Vertical Column Density (molecules/cm**2) 9 1 1 1 1 1 1.0 1.0 1 1.0 9999 99 99 99 99 999.9 999.9 9999 99.999 Year of observation (UT) Month of observation (UT) Day of observation (UT) Hour of observation (UT) Minute of observation (UT) Latitude observation point (degrees) Longitude observation point (degrees) Elevation of station above MSL (m) Solar zenith angle at time of observation (degrees) 1 1 1.429 1973 02 01 10 17 50.80 -4.35 100 71.228 3.020 9.797 1.456 1973 02 01 10 56 50.80 -4.35 100 69.117 2.742 9.671 1.520 1973 02 01 12 29 50.80 -4.35 100 68.231 2.641 9.075 2.437 1973 02 02 10 28 50.80 -4.35 100 70.272 2.887 8.556 2.456 1973 02 02 10 56 50.80 -4.35 100 68.839 2.710 8.137 6.416 1973 02 06 09 58 50.80 -4.35 100 71.249 3.023 9.547 6.455 1973 02 06 10 55 50.80 -4.35 100 67.741 2.588 9.198 6.532 1973 02 06 12 46 50.80 -4.35 100 67.240 2.536 9.050 7.490 1973 02 07 11 45 50.80 -4.35 100 66.108 2.427 9.298 8.433 1973 02 08 10 24 50.80 -4.35 100 68.821 2.707 10.222 8.463 1973 02 08 11 07 50.80 -4.35 100 66.642 2.478 10.195 8.532 1973 02 08 12 45 50.80 -4.35 100 66.599 2.473 9.797 8.562 1973 02 08 13 29 50.80 -4.35 100 68.795 2.704 9.921 9.428 1973 02 09 10 16 50.80 -4.35 100 69.031 2.732 10.420 9.454 1973 02 09 10 53 50.80 -4.35 100 66.885 2.501 10.472 9.520 1973 02 09 12 28 50.80 -4.35 100 65.788 2.398 10.797 13.437 1973 02 13 10 29 50.80 -4.35 100 66.895 2.502 10.396 13.464 1973 02 13 11 08 50.80 -4.35 100 64.995 2.330 12.083 13.500 1973 02 13 12 00 50.80 -4.35 100 64.110 2.258 12.032 14.417 1973 02 14 09 59 50.80 -4.35 100 68.711 2.695 11.175 14.477 1973 02 14 11 27 50.80 -4.35 100 64.100 2.257 10.797 14.510 1973 02 14 12 15 50.80 -4.35 100 63.888 2.241 10.872 14.587 1973 02 14 14 05 50.80 -4.35 100 69.664 2.809 11.299 15.403 1973 02 15 09 40 50.80 -4.35 100 70.107 2.866 12.798 15.438 1973 02 15 10 30 50.80 -4.35 100 66.196 2.436 12.873 15.496 1973 02 15 11 53 50.80 -4.35 100 63.430 2.206 13.950 15.551 1973 02 15 13 13 50.80 -4.35 100 65.592 2.381 13.615 16.426 1973 02 16 10 13 50.80 -4.35 100 66.996 2.512 12.975 16.428 1973 02 16 10 16 50.80 -4.35 100 66.815 2.494 13.136 16.461 1973 02 16 11 03 50.80 -4.35 100 64.153 2.261 12.849 16.501 1973 02 16 12 01 50.80 -4.35 100 63.088 2.181 13.486 16.503 1973 02 16 12 03 50.80 -4.35 100 63.097 2.181 13.459 16.561 1973 02 16 13 28 50.80 -4.35 100 66.159 2.432 13.077 19.442 1973 02 19 10 36 50.80 -4.35 100 64.432 2.283 11.603 19.531 1973 02 19 12 44 50.80 -4.35 100 62.895 2.167 11.251 20.434 1973 02 20 10 25 50.80 -4.35 100 64.779 2.312 9.647 20.545 1973 02 20 13 04 50.80 -4.35 100 63.392 2.203 9.523 21.448 1973 02 21 10 45 50.80 -4.35 100 63.243 2.192 8.013 21.502 1973 02 21 12 02 50.80 -4.35 100 61.320 2.060 8.457 21.531 1973 02 21 12 45 50.80 -4.35 100 62.217 2.120 8.457 21.564 1973 02 21 13 31 50.80 -4.35 100 64.697 2.305 8.803 22.505 1973 02 22 12 07 50.80 -4.35 100 60.988 2.039 9.870 22.573 1973 02 22 13 45 50.80 -4.35 100 65.342 2.359 10.071 23.458 1973 02 23 10 59 50.80 -4.35 100 61.836 2.094 10.797 23.509 1973 02 23 12 12 50.80 -4.35 100 60.680 2.020 10.899 26.458 1973 02 26 11 00 50.80 -4.35 100 60.685 2.021 11.363 26.486 1973 02 26 11 40 50.80 -4.35 100 59.561 1.955 11.390 26.488 1973 02 26 11 43 50.80 -4.35 100 59.525 1.953 11.498 27.401 1973 02 27 09 37 50.80 -4.35 100 66.193 2.435 10.799 27.403 1973 02 27 09 40 50.80 -4.35 100 65.969 2.415 10.450 27.460 1973 02 27 11 02 50.80 -4.35 100 60.215 1.993 10.423 27.462 1973 02 27 11 05 50.80 -4.35 100 60.074 1.984 10.181 27.524 1973 02 27 12 35 50.80 -4.35 100 59.707 1.963 10.128 27.527 1973 02 27 12 38 50.80 -4.35 100 59.818 1.969 9.859 27.581 1973 02 27 13 56 50.80 -4.35 100 64.623 2.299 10.044 28.439 1973 02 28 10 32 50.80 -4.35 100 61.387 2.065 8.656 28.479 1973 02 28 11 30 50.80 -4.35 100 58.965 1.922 8.656 28.528 1973 02 28 12 40 50.80 -4.35 100 59.520 1.952 8.631 28.565 1973 02 28 13 33 50.80 -4.35 100 62.433 2.134 8.779