Observed solar radio maps at 37 GHz on 04-04-2021: QSL at 37 GHz is 8200 +/- 500 K. Detected solar events at 11.2 GHz on 04-04-2021: Event 1: Flux: 102.69 SFU, time: 202104040512414995 (yyyymmddhhmmssFF), LEVEL: WEAK Check the flare profile: http://www.metsahovi.fi/Sunant/20210404.png