OBSERVATORY UPICE DECEMBER 2020 CZECH REPUBLIC FREQUENCY 33 MHz OBSERVING PERIOD 33 MHz 1. - 31. 0730 1430 NO OBSERVATION 33 MHz DEC FREQ STATION TYPE START TIME OF DUR FLUX DENS. REMARKS 2020 TIME MAXIMUM MIN PEAK MEAN UT UT 33 UPIC NO EVENTS NOT CALIBRATED