condition	mean	min	max
4 h after light	17.37355	16.1436	18.6035
8 h after light	15.817699999999999	15.2552	16.3802
12 h after light	12.781400000000001	12.3146	13.2482
4 h after dark	21.419866666666667	19.9367	22.4799
8 h after dark	24.9385	23.2589	26.5946
12 h after dark	20.783933333333334	19.8642	21.751