The temperature-humidity index (THI) of study area. The values at the top of graph indicate the numerical values of THI. The graphs are presented as mean ± standard deviations. T, temperature; RH, relative humidity; J, July; A, August; S, September; O, October; N, November; D, December; J, January; F, February; M, March; A, April; M, May; March, and J, June, respectively.