SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: NOVEMBER YEAR: 2011 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 0830 0857 0838 1 2 27 5 1025 1057 1033 1 3 22 5 2 1500 1531 1508 1 2 31 5 3 1008 1100 1020 1 2 52 5 PREFLARE 1100 1221 1111 2 4 81 5 2022 2117 2042 1 2 55 2a 4 1123 1320 1142 1 2 117 5 UNCERTN 5 1108 1200 1126 1 2 52 2a 6 0632 0701 0635 1 2 29 5 0954 1032 1001 1 3 38 5 1440 1516 1452U 1 2 36 2a 7 0931 0945 0939 1 2 14 6 9 1305 1453 1334 3 4 108 5 10 1216 1402 1233 1 2 106 3 11 1647 1724 1706 1 2 37 1 12 1331 1417 1338 1 2 46 5 14 0921 0947 0932 1 2 26 5 15 0907 0945 0914 1 3 38 5 1233 1355 1246 3 4 82 5 16 1458 1503 1516 1 2 5 6 21 1143 1204 1152 1 2 21 2a UNCERTN Evaluated by J.Klimes