SUDDEN  ENHANCEMENTS  OF  ATMOSPHERICS - SEA

Month: APRIL      YEAR: 2022      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.
   2    1318    1629    1345     2     3     191      5
  15    1030    1459    1207     1     2     269      5
  16    1450    1544    1458     1     2      54      5
  18    0742    0827    0759     1     2      45      5
        1012    1112    1034     1     2      60      5
  20    1239    1404    1255     1     2      85      5
  30    0953    1030    1003     1     2      37      5
        1343    1447    1349     1     4      64      5

        Evaluated by J.Klimes