condition	mean	min	max
4 h after light	18.4855665	17.362559	19.608574
8 h after light	16.6792405	14.859336	18.499145
12 h after light	14.5700135	14.136463	15.003564
4 h after dark	13.4435575	12.361727	14.525388
8 h after dark	14.7371695	14.124075	15.350264
12 h after dark	20.237211	20.237211	20.237211