SUDDEN IONOSPHERIC OF DISTURBANCES - SID Month: OCTOBER YEAR: 2017 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. 15 1359 1427 1403 1 2 28 5 N 27 1250 1320 1256 2 3 30 5 P NO OBSERVATION 5. 0830 1415 12. 0830 1410 16. 0000 2400 17. 0000 2400 18. 0000 0520 26. 0830 1510 P = positive efect N = negative efect Evaluated by J.Klimes