De Backer H. DOBSON UCCLE TOTALCOL 01-JAN-2000 00:00:0031-JAN-2000 23:59:590001 30 1010 Hugo De Backer Uccle; Royal Meteorological Institute Belgium Dobson Spectrophotometer Instrument No.40 NDSC 1 1 2000 01 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 5.456 2000 01 05 10 56 50.80 -4.35 100 74.338 3.554 7.871 5.457 2000 01 05 10 57 50.80 -4.35 100 74.287 3.544 7.871 6.458 2000 01 06 10 59 50.80 -4.35 100 74.122 3.511 8.261 6.507 2000 01 06 12 10 50.80 -4.35 100 73.502 3.393 8.604 7.491 2000 01 07 11 47 50.80 -4.35 100 73.224 3.342 7.893 7.515 2000 01 07 12 22 50.80 -4.35 100 73.590 3.409 8.040 11.447 2000 01 11 10 43 50.80 -4.35 100 74.143 3.515 8.167 11.448 2000 01 11 10 45 50.80 -4.35 100 74.064 3.499 8.167 11.486 2000 01 11 11 40 50.80 -4.35 100 72.702 3.251 8.167 11.487 2000 01 11 11 41 50.80 -4.35 100 72.691 3.249 8.167 12.452 2000 01 12 10 50 50.80 -4.35 100 73.721 3.433 7.476 12.518 2000 01 12 12 25 50.80 -4.35 100 72.906 3.286 7.573 13.449 2000 01 13 10 47 50.80 -4.35 100 73.712 3.432 7.989 13.502 2000 01 13 12 02 50.80 -4.35 100 72.388 3.199 8.065 14.432 2000 01 14 10 21 50.80 -4.35 100 74.829 3.656 9.174 14.518 2000 01 14 12 26 50.80 -4.35 100 72.577 3.230 9.373 16.427 2000 01 16 10 14 50.80 -4.35 100 74.966 3.686 8.827 17.453 2000 01 17 10 52 50.80 -4.35 100 72.823 3.272 7.425 17.473 2000 01 17 11 21 50.80 -4.35 100 71.944 3.128 7.256 17.540 2000 01 17 12 57 50.80 -4.35 100 73.028 3.307 7.721 18.438 2000 01 18 10 30 50.80 -4.35 100 73.693 3.428 8.680 18.550 2000 01 18 13 11 50.80 -4.35 100 73.487 3.390 8.580 20.416 2000 01 20 09 59 50.80 -4.35 100 75.357 3.773 8.580 20.492 2000 01 20 11 48 50.80 -4.35 100 71.018 2.990 8.556 20.543 2000 01 20 13 02 50.80 -4.35 100 72.590 3.232 8.680 21.423 2000 01 21 10 08 50.80 -4.35 100 74.488 3.585 9.671 23.403 2000 01 23 09 40 50.80 -4.35 100 76.271 3.993 8.704 23.440 2000 01 23 10 34 50.80 -4.35 100 72.536 3.223 8.656 24.412 2000 01 24 09 52 50.80 -4.35 100 75.054 3.705 7.769 24.540 2000 01 24 12 57 50.80 -4.35 100 71.460 3.054 7.721 26.538 2000 01 26 12 55 50.80 -4.35 100 70.845 2.965 8.113 27.420 2000 01 27 10 04 50.80 -4.35 100 73.511 3.394 7.683 27.421 2000 01 27 10 06 50.80 -4.35 100 73.402 3.374 7.656 27.514 2000 01 27 12 20 50.80 -4.35 100 69.577 2.798 8.167 27.515 2000 01 27 12 21 50.80 -4.35 100 69.603 2.801 7.925 27.561 2000 01 27 13 27 50.80 -4.35 100 72.231 3.174 8.220 27.562 2000 01 27 13 28 50.80 -4.35 100 72.329 3.189 7.979 28.448 2000 01 28 10 44 50.80 -4.35 100 70.841 2.965 7.868 28.490 2000 01 28 11 45 50.80 -4.35 100 69.139 2.745 7.721 28.534 2000 01 28 12 48 50.80 -4.35 100 70.086 2.863 7.868 31.400 2000 01 31 09 35 50.80 -4.35 100 74.942 3.681 7.549