condition	mean	min	max
4 h after light	25.3401	24.7268	25.9534
8 h after light	15.8786	14.561	17.1962
12 h after light	12.5242	12.4351	12.6133
4 h after dark	13.25045	12.6953	13.8056
8 h after dark	18.10205	17.415	18.7891
12 h after dark	22.45565	21.5604	23.3509