condition	mean	min	max
4 h after light	13.9698	13.7358	14.2038
8 h after light	17.96995	17.7803	18.1596
12 h after light	22.33325	21.8716	22.7949
4 h after dark	23.26765	22.9402	23.5951
8 h after dark	22.65205	22.6086	22.6955
12 h after dark	18.165	17.6503	18.6797