SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: MAY 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. 4 0732 0821 0742 1 2 49 5 UNCERTN 6 1522 1625 1529 1 2 63 5 UNCERTN 8 0726 0819 0737 1 2 53 5 UNCERTN 12 0631 0754 0645U 1 2 83 3 UNCERTN 17 0606 0800 0628 1 2 114 3 UNCERTN Evaluated by J.Klimes