condition	mean	min	max
4 h after light	16.579435	13.93259	19.22628
8 h after light	17.599053	14.605745	20.592361
12 h after light	21.835465	18.598424	25.072506
4 h after dark	19.229929499999997	17.211301	21.248558
8 h after dark	26.8613755	24.611952	29.110799
12 h after dark	21.748517	21.748517	21.748517