Investigation of the Variability and Implications of Meteorological Dry/Wet Conditions in the Poyang Lake Catchment, China, during the Period 1960–2010

Table 2

Statistical results of frequency and average duration of dry and wet episodes according to different timescales of SPEI.

Dry/wet	SPEI-1	SPEI-3	SPEI-6	SPEI-12	SPEI-24	SPEI-48
Dry
Frequency (times)	71	39	20	7	7	4
Average duration (months)	1.48	2.33	4.85	14.71	14.00	24.75
Wet
Frequency (times)	67	35	19	10	6	2
Average duration (months)	1.54	3.20	5.89	10.60	17.00	53.00