Forward and/or backscatter system of infrared light 3 002180 Doppler radar system 5 002180 Forward and/or backscatter system of visible light 2 002180 Infrared light emitting diode (IRED) system 4 002180 1 Main present weather detecting system Missing value 15 002180 2014-09-03T09:54:00.203Z Optical scatter system combined with precipitation occurrence sensing system 1 002180 Others 14 002180 Manual observation 0 002180