SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: DECEMBER YEAR: 2002 Observing Station: OBSERVATORY U P I C E CZECH REPUBLIC Lat.: 50 30 26.6 N Sea level: 416 m Long.: 16 00 43.5 E Frequency: 27 kHz Band pass: 308 Hz a 3 dB Chart speed: 3.4 cm/H Recorder time constant: 27 sec Date Start End Max. Imp. Def. Dur. Type REMARKS UT UT UT SEA min. 1 1402 1423 1410 1 2 25 6 3 0816 0854 0826 1 3 48 5 4 1342 1405 1354 1 2 23 6 6 1035 1206 1058U 1 2 91 3 8 0904 0942 0917 1 2 38 5 UNCERTN 10 1042 1224 1224 1 2 102 3 PREFLARE 1224 1337 1228 3 4 73 1 11 1326 1406 1336 1 2 40 3 PREFLARE 1406 1504 1413 2 4 58 5 12 0831 1011 0842U 1 2 100 3 1119 1229D 1148 1 3 70D 3 1229 1345 1249 1 3 76 5 13 0833 0905 0838 1 3 32 5 0936 1022 1005 1 2 46 3 1042 1138 1053 1 2 56 3 1328 1431 1334 1 4 63 5 14 0837 0928 0859 1 2 51 2a 0948 1044 0958 1 2 56 3 1127 1210 1145 1 2 43 3 15 1130 1248 1138 1 2 78 3 16 0925 1113 1113 1 2 108 3 PREFLARE 1113 1349 1121 3 4 156 5 17 0748 0936 0838U 1 2 108 3 1004 1027 1009 1 2 23 1 18 1146 1247 1149 1 3 61 5 20 0828 0910 0842 1 3 42 5 1248 1317 1300 1 2 29 6 PREFLARE 1317 1418 1320 2 4 61 1 23 1209 1232 1217 1 2 23 2a 24 1448 1534 1458 2 3 46 5 Evaluated by L.Krivsky and J.Klimes