condition	mean	min	max
4 h after light	9.16156	8.06302	10.2601
8 h after light	12.1538	11.5713	12.7363
12 h after light	13.9387	11.9584	15.919
4 h after dark	18.2934	16.8517	19.7351
8 h after dark	15.11715	13.7319	16.5024
12 h after dark	12.47815	11.6278	13.3285