SUDDEN  ENHANCEMENTS  OF  ATMOSPHERICS - SEA

Month: APRIL      YEAR: 2018      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.
  26    1044    1115    1055     1     2      31      2a   UNCERTN	

        NO OBSERVATION: 19. 0609 1052 

        Evaluated by J.Klimes