condition	mean	min	max
4 h after light	7.1066	6.98945	7.22375
8 h after light	7.48329	7.23957	7.72701
12 h after light	7.3635649999999995	6.67296	8.05417
4 h after dark	11.3247	10.7611	11.8883
8 h after dark	9.97344	9.56328	10.3836
12 h after dark	10.06165	10.0363	10.087