condition	mean	min	max
4 h after light	8.384305000000001	7.60661	9.162
8 h after light	8.708079999999999	8.26999	9.14617
12 h after light	7.550195	7.08307	8.01732
4 h after dark	7.779823333333334	6.89463	8.38282
8 h after dark	7.50327	7.31146	7.78254
12 h after dark	6.205873333333333	5.90327	6.37878