condition	mean	min	max
4 h after light	7564.7	7564.7	7564.7
8 h after light	7198.1	6251.1	8145.1
12 h after light	7922.0	6941.7	8902.3
4 h after dark	8515.35	8241.1	8789.6
8 h after dark	9952.1	7796.1	12108.1
12 h after dark	10587.05	10030.3	11143.8