condition	mean	min	max
4 h after light	5.61275	4.51455	6.71095
8 h after light	4.27512	3.90127	4.64897
12 h after light	5.74037	4.72765	6.75309
4 h after dark	9.110515	8.41627	9.80476
8 h after dark	6.6518999999999995	6.31982	6.98398
12 h after dark	6.91249	6.63304	7.19194