SUDDEN  ENHANCEMENTS  OF  ATMOSPHERICS - SEA

Month: APRIL      YEAR: 2010      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   1253   1351   1309    1     2     58     5    UNCERTN
   7   0731   0850   0743    1     2     79     3
  29   1627   1646   1633    1     2     19     5    UNCERTN

       Evaluated by J.Klimes