condition	mean	min	max
4 h after light	7.77961	7.6970600000000005	7.85337
8 h after light	7.88821	7.7777899999999995	7.98354
12 h after light	7.829763333333333	7.743580000000001	7.91972
4 h after dark	7.7570733333333335	7.71938	7.81027
8 h after dark	7.588913333333333	7.4964699999999995	7.676
12 h after dark	7.57524	7.4478800000000005	7.6625