condition	mean	min	max
0 h after light	17.816850000000002	16.9698	18.6639
4 h after light	19.1945	18.0267	20.3623
8 h after light	16.4954	14.7015	18.2893
4 h after dark	17.697200000000002	16.17	19.2244
8 h after dark	20.744149999999998	20.0813	21.407
12 h after dark	20.8227	20.5527	21.0927