condition	mean	min	max
4 h after light	6.251456666666667	6.12628	6.31744
8 h after light	6.405216666666667	6.02595	6.85007
12 h after light	6.303606666666667	6.20971	6.3932199999999995
4 h after dark	6.21625	6.106669999999999	6.414540000000001
8 h after dark	6.03595	5.87866	6.2752099999999995
12 h after dark	6.02986	5.80056	6.20247