condition	mean	min	max
4 h after light	18.23335	16.7009	19.7658
8 h after light	21.862299999999998	20.3603	23.3643
12 h after light	21.05735	20.7044	21.4103
4 h after dark	26.941766666666666	24.5064	30.0684
8 h after dark	26.7062	23.8419	31.0041
12 h after dark	21.5513	17.6421	23.8493