condition	mean	min	max
4 h after light	16.8183	12.6659	20.9707
8 h after light	13.3233	11.8723	14.7743
12 h after light	11.92625	10.7706	13.0819
4 h after dark	19.0425	16.3994	21.6856
8 h after dark	22.82095	22.3266	23.3153
12 h after dark	20.208	19.4524	20.9636