condition	mean	min	max
0 h after light	22.36115	21.307	23.4153
4 h after light	17.9148	17.2811	18.5485
8 h after light	9.96337	9.13994	10.7868
4 h after dark	16.7297	14.2774	19.182
8 h after dark	19.48875	19.0898	19.8877
12 h after dark	19.64115	19.2137	20.0686