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Request dayplots of GRSN/GRF stations. The display is split up in 24 lines, one line per hour. The amplitudes have a fixed normalisation, it can be adjusted with "Amplitude-Zoom" below. Different plots have the same normalisation if the same zoom factor is selected. The longperiod filters are applied to the LH channel (= 1Hz sampling rate) for the GRSN stations, the short period filters on the BH channel (= 20Hz sampling rate). Therefore the short period plots and all GRF plots take much longer time to compute.