condition	mean	min	max
4 h after light	17.740129	17.364441	18.115817
8 h after light	20.01536	19.982705	20.048015
12 h after light	19.5109785	19.267559	19.754398
4 h after dark	18.9799065	18.69787	19.261943
8 h after dark	16.325366	15.51814	17.132592
12 h after dark	17.24701	17.24701	17.24701