OBSERVATORY UPICE APRIL 2008 CZECH REPUBLIC FREQUENCY 32.8 MHz OBSERVING PERIOD 32.8 MHz 1. - 30. 0500 1700 NO OBSERVATION 32.8 MHz APR FREQ STATION TYPE START TIME OF DUR FLUX DENS. REMARKS 2008 TIME MAXIMUM MIN PEAK MEAN UT UT 18 33 UPIC 2 S/F 1252.5 1253.0 1.0 NOT UNCERTN 26 33 UPIC 40 F 1404.0 1412.5 15.0 CALIBRATED UNCERTN