SUDDEN ENHANCEMENTS OF ATMOSPHERICS - SEA Month: JANUARY YEAR: 2013 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. 5 0929 1002 0932 2 3 33 5 11 0610 0705 0616 1 2 55 5 0907 0939 0912 1 3 32 5 1452 1545 1502 1 4 53 5 13 0835 0908 0841 1 2 33 5 1510 1543 1516 1 2 33 5 18 0942 1010 0948 1 2 28 6 NO OBSERVATION 31.01.2013 Evaluated by J.Klimes