SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: MAY YEAR: 2003 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 0930 1010 0943 1 2 40 3 1139 1304 1153 1 3 85 5 1410 1505 1416 1 2 55 5 2 1230 1342 1246 1 2 72 3 4 1218 1310 1247U 1 2 52 3 UNCERTN 5 1012 1052 1018 1 2 40 3 1554 1640 1603 1 2 46 3 6 0924 1000 1000 1 2 36 3 PREFLARE 1000 1232 1020 3 3 152 5 1347 1546 1410 1 3 119 5 7 0558 0646 0615 1 2 48 3 1619 1646 1627U 1 2 27 6 UNCERTN 8 0548 0641 0606 1 2 53 3 9 0828 0900 0834 2 2 32 5 UNCERTN 12 0749 0903 0807 2 2 74 5 20 1655 1714 1659 1 1 19 5 22 0607 0805 0703 2 2 118 3 1428 1604 1509 1 2 96 3 24 1425 1500 1432 1 2 35 3 1511 1556 1526 1 2 45 3 1640 1713 1650U 1 2 33 5 UNCERTN 25 1658 1806 1709 1 2 68 5 26 0540 0832 0551 2 3 172 5 1705 1835 1715 1 2 90 5 27 0539 0813 0620U 1 2 154 3 1455 1551 1515 1 4 56 2a 28 1355 1443 1405 1 2 48 5 1539 1621 1600 1 2 42 3 29 0604 0700 0606 1 2 56 3 0804 0817 0810 1 2 13 2b 0855 0919 0906 1 2 24 2b 1128 1150 1140 1 2 22 4 1444 1511 1453 1 2 27 6 1704 1743 1717 1 3 39 2a 30 0647 0744 0651 2 3 57 5 0854 1034 0908 1 2 100 5 1614 1646 1622 1 2 32 5 1649 1753 1715U 1 2 64 3 31 1344 1442 1400 1 2 58 3 1514 1624 1549U 1 2 70 3 1626 1717 1653 1 2 51 3 Evaluated by L.Krivsky and J.Klimes