Distribution in time and space of current pulses in LAP, based on the simple algorithm described in the text. Grey indicates regions searched where no pulses were detected by the algorithm; white periods indicate regions without suitable data. Top: number of pulses detected in LAP1 probe current per 10-min period, corresponding to 5° cometary longitude, during 2015. Centre: number of large pulses per 10-min period. Below: latitude and phase angle (solar zenith angle) on left scale, heliocentric distance in AU and ¹⁰log of cometocentric distance in km on right scale.