SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: JUNE 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. 8 0822 0904 0833 1 2 42 5 UNCERTN 9 0652 0726 0702 1 2 34 5 15 0739 0805 0744 1 2 26 5 UNCERTN Evaluated by J.Klimes