S O L A R R A D I O E M I S S I O N Selected Fixed Frequency Events Outstanding occurrences 2019 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) 22.03 2804 4 S/F 00.33.0 00.33.7 3.0 15.7