SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: OCTOBER YEAR: 2013 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. 11 0711 0902 0720 2 3 111 5 0912 1024 0922 1 2 72 5 1214 1403 1234 1 3 109 5 1444 1514 1454 1 3 30 5 14 1252 1528 1317 2 4 156 5 15 0831 0908 0836 1 3 37 5 1411 1526 1430 1 2 75 3 1526 1601 1538U 1 2 35 3 16 1429 1538 1437 2 3 69 5 18 1511 1613 1528 1 3 62 5 19 0930 0956 0935 1 2 26 6 21 1558 1613 1603 1 2 15 6 22 1453 1554 1522 1 2 61 2a 23 1115 1140 1120 1 2 25 5 24 0946 1002 1002 1 2 16 6 PREFLARE 1002 1159 1035 3 4 117 5 25 0757 0925 0803 3 4 88 5 0946 1038 0957 1 2 52 5 1433 1454 1440 2 3 21 5 PREFLARE 1454 1606 1506 3 4 72 1 1657 1757 1720 1 2 60 3 26 0922 1029 0939 2 3 67 5 1036 1347 1119 3 4 191 5 27 1237 1410 1249 3 4 93 5 28 1110 1401 1155 2 3 171 5 1401 1459D 1411 3 4 58D 5 1459 1639 1512 2 3 100 5 31 1341 1506 1350 3 4 85 5 Evaluated by J.Klimes