Self-Organized Criticality of Rainfall in Central China

Table 2

Distribution model of rain duration and drought duration.

RD/DD	𝑥1	𝑥2	𝑥𝑀	⋯
𝑛(𝑥)	𝑛(𝑥1)	𝑛(𝑥2)	⋯	𝑛(𝑥𝑀)
𝑁(𝑥)	∑^𝑀𝑖=1𝑛(𝑥𝑖)	∑^𝑀𝑖=2𝑛(𝑥𝑖)	⋯	∑^𝑀𝑖=𝑀𝑛(𝑥𝑖)
𝑁(𝑥)	∑^𝑀𝑖=1𝑛𝑥𝑖/𝑥1	∑^𝑀𝑖=2𝑛𝑥𝑖/𝑥2	⋯	∑^𝑀𝑖=𝑀𝑛(𝑥𝑖)/𝑥𝑀

𝑥_𝑖 stands for the length of every rain or drought event. M is the longest time period.