SUDDEN IONOSPHERIC OF DISTURBANCES - SID Month: MARCH YEAR: 2018 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. 2 1058 1109D X X X 11D X P 30 0802 0822 0806 2 4 20 5 P P = positive efect NO OBSERVATION 1. 0945 1215 2. 1109 2400 3. 0000 2400 4. 0000 2400 5. 0000 1118 8. 0954 1247 15. 0802 1158 22. 0944 1258 24. 0000 2400 25. 0000 2400 26. 0000 2400 Evaluated by J.Klimes