condition	mean	min	max
0 h after light	19.37365	18.0313	20.716
4 h after light	20.23065	19.0319	21.4294
8 h after light	18.74645	18.4794	19.0135
4 h after dark	24.06145	23.7747	24.3482
8 h after dark	25.85995	25.2967	26.4232
12 h after dark	20.48875	17.9152	23.0623