condition	mean	min	max
4 h after light	19.490949999999998	18.1755	20.8064
8 h after light	17.65955	17.2476	18.0715
12 h after light	17.6784	16.9365	18.4203
4 h after dark	19.208550000000002	18.5671	19.85
8 h after dark	20.592	20.1931	20.9909
12 h after dark	21.4461	21.3776	21.5146