S O L A R R A D I O E M I S S I O N Selected Fixed Frequency Events Outstanding occurrences 2021 Observing Station Ussurijsk Data Freq.Stat. Type Start Time Dur. Flux density Polaris. MHz time of max Peak Mean UT UT Min. (10 -22w/m 2 Hz) 20.01 2804 1 S 01.08.8 01.10.7 3.5 7.3 23.01 2804 1 S 01.09.4 01.10.6 2.6 6.4 13.04 2804 3 S 03.33.0 03.36.7 7.0 11.7 13.04 2804 3 S 02.24.7 02.31.0 11.1 7.6 19.04 2804 46 C 23:27:7 23:54:6 47.0 48.5 20.04 2804 30 PBI 00.21.8 00.26.6 48.5 17.9 22.04 2804 1 S 01.42.2 01.46.1 9.9 3.7 22.04 2804 20 GRF 04.20.0 04.58.9 63.7 17.5 25.04 2804 3 S 01.18.3 01.33.8 49.5 8.2 22.05 2804 4 S/F 02.46.0 02.53.3 12.4 47.2 23.05 2804 8 S 04.34.4 04.35.0 1.3 18.9 23.05 2804 4 S/F 05.06.4 05.06.8 1.5 72.4 28.05 2804 28 PRE 23.00.7 23.08.1 8.0 11.1 28.05 2804 3 S 23.08.7 23.11.5 7.2 45.1 29.05 2804 20 GRF 23.50.0E 23.05.7 70.0U 8.8 03.07 2804 3 S 02.13.2 02.30.4 31.1 12.5 04.07 2804 4 S/F 05.07.4 05.10.7 6.5 15.7 26.08 2804 4 S\F 23.22.6 23.26.0 10.4 26.4 28.08 2804 20 GRF 02.15.7 02.46.1 76.8 9.5 29.08 2804 20 GRF 00.26.3 00.31.5 74.2 8.4 07.09 2804 3 S 23.25.0 23.283.6 6.7 15.4 08.09 2804 3 S 00.00.1 00.02.8 4.4 17.2 08.09 2804 3 S 23.15.7 23.23.4 27.4 8.8 17.09 2804 3 S 04.11.9 04.14.7 10.1 35.5 19.09 2804 1 S 02.14.1 02.17.1 8.1 8.8 23.09 2804 20 GRF 03.39.7 03.53.2 27.4 15.6 23.09 2804 4 S/F 04.31.5 04.38.0 24.8 34.1 29.10 2804 20 GRF 02.07.0 02.50.8 116.7 11.4 30.10 2804 2 S\F 03.12.1 03.13.1 15.0 15.4 31.10 2804 20 GRF 01.14.7 03.24.8 174.4 7.6 01.11 2804 45 C 01.25.0 01.39.8 26.0 101.4 01.11 2804 29 PBI 01.51.0 01.51.1 89.0 5.4 02.11 2804 28 ABS 00.12.4 01.19.8 103.0 -7.1 02.11 2804 28 PRE 02.03.0 02.24.2 26.5 42.8 02.11 2804 46 C 02.29.5 02.37.7 31.6 102.9 02.11 2804 29 PBI 03.00.3 03.00.3 80.0 4.8 17.12 2804 20 GRF 00.11.0 00.13.8 28.0 8.4 ? 17.12 2804 20 GRF 00.41.6 00.57.7 46.4 6.9 ? 17.12 2804 20 GRF 01.29.6 01.41.0 64.8 8.7 ? 20.12 2804 3 S 03.14.9 03.20.4 12.0 5.6 20.12 2804 20 GRF 04.30.6 04.44.9 36.8 6.5 21.12 2804 23 GRF 01.45.3 01.52.4 226.0 12.2 21.12 2804 3 S 03.41.8 03.47.1 17.4 3.9 21.12 2804 3 S 04.53.5 04.46.1 13.4 3.3 22.12 2804 21 GRF 01.48.9 02.12.6 99.1 2.0 22.12 2804 20 GRF 04.17.2 04.42.4 50.3 5.3 23.12 2804 20 GRF 00.39.3 00.44.3 25.2 3.1 24.12 2804 3 S 03.39.0 03.43.4 10.7 2.1 24.12 2804 1 S 04.10.2 04.13.0 8.1 3.7 24.12 2804 20 GRF 04.39.0 04.53.7 38.2 5.5 26.12 2804 3 S 00.35.4 00.45.4 14.1 2.1 26.12 2804 20 GRF 01.26.9 01.34.0 53.2 3.3 26.12 2804 3 S 03.40.1 03.44.2 19.4 2.8 26.12 2804 21 GRF 04.10.4 04.13.2 13.7 6.5 26.12 2804 20 GRF 04.40.0 04.55.5 32.8 4.5 29.12 2804 3 S 04.22.4 04.27.5 11.6 31.0