condition	mean	min	max
4 h after light	13.87575	13.2998	14.4517
8 h after light	13.77445	13.0047	14.5442
12 h after light	16.2968	15.7828	16.8108
4 h after dark	21.4742	21.0037	21.9447
8 h after dark	19.95825	19.7153	20.2012
12 h after dark	18.1359	17.605	18.6668