SUDDEN  ENHANCEMENTS  OF  ATMOSPHERICS - SEA

Month: JUNE       YEAR: 2021      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.
 09     0850    0933    0908     1     2      43     5
 12     1627    1715    1639     2     3      48     5     UNCERTN

        NO OBSERVATION 25. 0740 2400  26. 0000 0930
 
        Evaluated by J.Klimes