condition	mean	min	max
4 h after light	7.696954999999999	6.95142	8.44249
8 h after light	7.06127	7.01004	7.1125
12 h after light	8.13163	7.68104	8.58222
4 h after dark	9.36135	8.99916	9.72354
8 h after dark	9.44069	9.26318	9.6182
12 h after dark	9.64693	9.60334	9.69052