OBSERVATORY UPICE MAY 2018 CZECH REPUBLIC FREQUENCY 33 MHz OBSERVING PERIOD 33 MHz 1. - 31. 0400 1800 NO OBSERVATION 33 MHz 12. - 30. 0400 1800 MAY FREQ STATION TYPE START TIME OF DUR FLUX DENS. REMARKS 2018 TIME MAXIMUM MIN PEAK MEAN UT UT 33 UPIC NO EVENTS NOT CALIBRATED