condition	mean	min	max
4 h after light	8.84938	8.79523	8.89823
8 h after light	8.776629999999999	8.63642	8.87228
12 h after light	8.70779	8.57381	8.82504
4 h after dark	8.677153333333333	8.59559	8.72309
8 h after dark	8.58536	8.42522	8.78882
12 h after dark	8.456493333333334	8.3068	8.552810000000001