condition	mean	min	max
4 h after light	6.139883333333334	5.94686	6.35179
8 h after light	6.043403333333333	5.98405	6.0793
12 h after light	5.91981	5.75596	6.03912
4 h after dark	5.85868	5.78337	5.91115
8 h after dark	5.87266	5.711069999999999	5.95978
12 h after dark	6.000693333333333	5.9467	6.10728