condition	mean	min	max
4 h after light	14.586400000000001	12.295	16.8778
8 h after light	15.67165	14.972	16.3713
12 h after light	19.07645	18.2823	19.8706
4 h after dark	20.14	19.3057	20.7493
8 h after dark	19.896433333333334	19.1626	20.5277
12 h after dark	15.529633333333333	14.1634	16.4191