De Backer H. DOBSON UCCLE TOTALCOL 01-FEB-1981 00:00:0028-FEB-1981 23:59:590001 30 1010 Hugo De Backer Uccle; Royal Meteorological Institute Belgium Dobson Spectrophotometer Instrument No.40 NDSC 1 1 1981 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 2.391 1981 02 02 09 23 50.80 -4.35 100 75.468 3.798 6.877 2.393 1981 02 02 09 26 50.80 -4.35 100 75.138 3.723 6.823 2.470 1981 02 02 11 17 50.80 -4.35 100 68.100 2.626 7.011 2.473 1981 02 02 11 20 50.80 -4.35 100 68.011 2.617 6.958 2.567 1981 02 02 13 36 50.80 -4.35 100 71.008 2.988 7.334 2.569 1981 02 02 13 39 50.80 -4.35 100 71.237 3.021 7.361 4.432 1981 02 04 10 21 50.80 -4.35 100 70.142 2.870 11.251 4.567 1981 02 04 13 36 50.80 -4.35 100 70.425 2.908 10.195 5.464 1981 02 05 11 07 50.80 -4.35 100 67.529 2.566 8.236 5.475 1981 02 05 11 24 50.80 -4.35 100 67.049 2.517 8.161 5.524 1981 02 05 12 34 50.80 -4.35 100 67.177 2.530 8.309 6.413 1981 02 06 09 54 50.80 -4.35 100 71.533 3.065 6.791 6.471 1981 02 06 11 18 50.80 -4.35 100 66.880 2.501 7.084 6.496 1981 02 06 11 54 50.80 -4.35 100 66.355 2.450 6.987 9.440 1981 02 09 10 33 50.80 -4.35 100 67.916 2.607 8.261 9.482 1981 02 09 11 34 50.80 -4.35 100 65.595 2.381 8.333 9.522 1981 02 09 12 31 50.80 -4.35 100 65.837 2.403 8.408 9.571 1981 02 09 13 41 50.80 -4.35 100 69.307 2.765 8.704 10.505 1981 02 10 12 07 50.80 -4.35 100 65.117 2.340 10.396 10.570 1981 02 10 13 40 50.80 -4.35 100 68.881 2.714 10.171 11.446 1981 02 11 10 42 50.80 -4.35 100 66.790 2.492 10.960 11.451 1981 02 11 10 49 50.80 -4.35 100 66.412 2.456 10.772 11.482 1981 02 11 11 34 50.80 -4.35 100 64.947 2.326 10.595 11.533 1981 02 11 12 47 50.80 -4.35 100 65.673 2.388 10.270 12.435 1981 02 12 10 26 50.80 -4.35 100 67.398 2.552 9.698 12.438 1981 02 12 10 30 50.80 -4.35 100 67.161 2.528 9.752 12.480 1981 02 12 11 31 50.80 -4.35 100 64.668 2.303 9.725 12.483 1981 02 12 11 35 50.80 -4.35 100 64.602 2.297 9.725 12.582 1981 02 12 13 57 50.80 -4.35 100 69.577 2.798 9.448 13.409 1981 02 13 09 48 50.80 -4.35 100 69.949 2.845 9.537 13.412 1981 02 13 09 53 50.80 -4.35 100 69.535 2.793 9.375 13.456 1981 02 13 10 56 50.80 -4.35 100 65.458 2.369 9.590 13.459 1981 02 13 11 00 50.80 -4.35 100 65.265 2.353 9.402 13.533 1981 02 13 12 47 50.80 -4.35 100 65.010 2.331 9.644 13.537 1981 02 13 12 53 50.80 -4.35 100 65.274 2.353 9.590 16.452 1981 02 16 10 50 50.80 -4.35 100 64.689 2.304 11.202 16.455 1981 02 16 10 54 50.80 -4.35 100 64.505 2.289 11.202 16.498 1981 02 16 11 57 50.80 -4.35 100 63.060 2.179 11.202 16.500 1981 02 16 12 00 50.80 -4.35 100 63.063 2.179 11.229 16.574 1981 02 16 13 47 50.80 -4.35 100 67.470 2.560 10.907 16.576 1981 02 16 13 49 50.80 -4.35 100 67.689 2.583 11.122 17.428 1981 02 17 10 16 50.80 -4.35 100 66.405 2.455 11.350 17.527 1981 02 17 12 38 50.80 -4.35 100 63.369 2.201 11.149 17.572 1981 02 17 13 44 50.80 -4.35 100 66.928 2.505 11.200 19.440 1981 02 19 10 33 50.80 -4.35 100 64.618 2.299 10.746 19.523 1981 02 19 12 33 50.80 -4.35 100 62.524 2.141 10.947 19.583 1981 02 19 14 00 50.80 -4.35 100 67.546 2.568 10.947 20.452 1981 02 20 10 51 50.80 -4.35 100 63.262 2.193 12.339 20.511 1981 02 20 12 16 50.80 -4.35 100 61.796 2.091 12.771 23.413 1981 02 23 09 54 50.80 -4.35 100 66.093 2.426 11.175 23.415 1981 02 23 09 57 50.80 -4.35 100 65.784 2.398 11.229 23.473 1981 02 23 11 20 50.80 -4.35 100 61.051 2.043 11.363 23.475 1981 02 23 11 23 50.80 -4.35 100 60.977 2.039 11.363 23.508 1981 02 23 12 11 50.80 -4.35 100 60.638 2.018 11.444 23.510 1981 02 23 12 14 50.80 -4.35 100 60.681 2.021 11.390 23.572 1981 02 23 13 44 50.80 -4.35 100 64.924 2.324 11.122 23.575 1981 02 23 13 48 50.80 -4.35 100 65.225 2.349 11.256 24.455 1981 02 24 10 54 50.80 -4.35 100 61.647 2.082 11.452 25.515 1981 02 25 12 22 50.80 -4.35 100 60.080 1.985 11.200 25.575 1981 02 25 13 48 50.80 -4.35 100 64.566 2.294 11.551 25.577 1981 02 25 13 51 50.80 -4.35 100 64.821 2.315 11.498 26.443 1981 02 26 10 38 50.80 -4.35 100 61.777 2.090 10.821 26.475 1981 02 26 11 24 50.80 -4.35 100 59.828 1.970 10.872 26.523 1981 02 26 12 33 50.80 -4.35 100 59.997 1.980 11.202 26.526 1981 02 26 12 37 50.80 -4.35 100 60.108 1.986 11.149 26.573 1981 02 26 13 45 50.80 -4.35 100 64.031 2.252 11.283 26.575 1981 02 26 13 48 50.80 -4.35 100 64.253 2.269 11.229 27.451 1981 02 27 10 49 50.80 -4.35 100 60.756 2.025 9.322 27.454 1981 02 27 10 53 50.80 -4.35 100 60.583 2.015 9.080 27.478 1981 02 27 11 28 50.80 -4.35 100 59.366 1.944 9.187 27.480 1981 02 27 11 31 50.80 -4.35 100 59.299 1.940 9.080 27.485 1981 02 27 11 38 50.80 -4.35 100 59.183 1.934 9.187 27.488 1981 02 27 11 42 50.80 -4.35 100 59.133 1.931 9.080 27.559 1981 02 27 13 25 50.80 -4.35 100 62.193 2.118 9.050