SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: SEPTEMBER YEAR: 2016 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 1000 1038 1011 1 2 38 5 UNCERTN 10 0836 0940 0905 1 2 64 3 UNCERTN 12 1434 1504 1440 1 2 30 5 UNCERTN 22 1132 1221 1152 1 2 49 3 UNCERTN 26 0652 0731 0704 1 2 39 5 UNCERTN NO OBSERVATION 13.; 14.; 15.; 23.; 24. 0000 2400 Evaluated by J.Klimes