(a)
(b)
(c)
(d)
(e)
(f)
Figure 2: Lorenz curves for precipitation observations. (a) WN station, (b) YX station, (c) YS station, (d) DS station, (e) XY station, and (f) XR station. The straight line denotes the equidistribution line, circles denote empirical values (observed precipitation), the line with triangles denotes the exponential values calculated by (1), and the line with crosses denotes the exponential values calculated by (2). is the precipitation on day . is the day (period from 1959 to 2015).