condition	mean	min	max
4 h after light	17.5076865	16.073275	18.942098
8 h after light	16.7814325	15.925235	17.63763
12 h after light	15.199408000000002	14.157928	16.240888
4 h after dark	18.1933965	17.215418	19.171375
8 h after dark	18.044760500000002	16.834219	19.255302
12 h after dark	13.65563	13.65563	13.65563