SUDDEN  IONOSPHERIC   OF  DISTURBANCES  - SID

Month: DECEMBER   YEAR: 2015      Observing Station: OBSERVATORY
                                                      U P I C E
                                                   CZECH REPUBLIC

Transmitter coordinates:         Receiver coordinates:
Lat.:  63 51 1.31 N               Lat.:  50 30 26.6 N
Long.: 22 28 0.38 W               Long.: 16 00 43.5 E

Sea level: 416 m
Frequency: 37.5 kHz            Band pass: 308 Hz a 80 dB
Chart speed: 3.4 cm/H        Recorder time constant: 1 min

Date    Start   End     Max.    Imp.  Def.   Dur.   Type   REMARKS
         UT      UT      UT     SID          min.
  12    1141    1154    1145     1     3      13      5    negat efect
        1339    1415    1345     1     3      36      5    negat -> pozit
  14    1416    1426    1419     1     3      10      5
  16    0831    0954    0851     1     2      83      5    negat -> pozit
  25    1042    1059    1045     1     3      17      5    negat UNCERTN
        1143    1201    1147     1     3      18      5    negat UNCERTN

        NO OBSERVATION    3. 0830 1520    10. 0830 1530
                         17. 0830 1530    24. 0830 1600
                         31. 0830 1730

        Evaluated by J.Klimes