SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: FEBRUARY YEAR: 2008 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. 7 0714 0800 0725 1 2 46 5 UNCERTN 11 1439 1522 1448 1 2 43 5 UNCERTN 24 0920 0956 0940 1 2 36 2a UNCERTN Evaluated by J.Klimes