condition	mean	min	max
4 h after light	17.841442	17.570968	18.111916
8 h after light	16.5777905	15.042905	18.112676
12 h after light	15.136121	14.359794	15.912448
4 h after dark	13.750256499999999	12.893368	14.607145
8 h after dark	15.6607345	15.419439	15.90203
12 h after dark	54.270437	54.270437	54.270437