condition	mean	min	max
4 h after light	7.8545855	7.437372	8.271799
8 h after light	7.262587	7.112902	7.412272
12 h after light	7.609374	7.581573	7.637175
4 h after dark	7.1422475	6.897096	7.387399
8 h after dark	7.54972	6.785088	8.314352
12 h after dark	6.92973	6.92973	6.92973