condition	mean	min	max
4 h after light	6.1083533333333335	5.9507	6.22227
8 h after light	6.21406	5.676159999999999	6.7831600000000005
12 h after light	6.37734	6.3516900000000005	6.3966400000000005
4 h after dark	5.892543333333333	5.52701	6.19744
8 h after dark	5.97304	5.76888	6.17157
12 h after dark	5.770556666666667	5.7537	5.78606