Table 1. Availability of observation facilities (gauge and weather radar) and Z-R relationship in real-time depending on stages.

Stage	Storm Location	Availability of gauge, radar and Z-R relationship in real-time
		Radar A			Radar B
		Gauge	Radar	Z-R	Gauge	Radar	Z-R
I	Below the Island	No	Yes	No	No	No	No
II	On the Island	Yes	Yes	Yes	No	No	No
III	In overlapped area	No/Yes	Yes	No/Yes	No	Yes	No
IV	On the Inland	No/Yes	No/Yes	No/Yes	Yes	Yes	Yes