condition	mean	min	max
4 h after light	12.21585	10.5573	13.8744
8 h after light	16.84035	16.0432	17.6375
12 h after light	18.4712	18.3385	18.6039
4 h after dark	23.535600000000002	22.0131	26.0029
8 h after dark	23.943133333333332	21.4959	26.2892
12 h after dark	13.745999999999999	12.7229	14.6955