condition mean min max 4 h after light 2.934 2.61927 3.24873 8 h after light 3.265085 2.74065 3.78952 12 h after light 3.41627 3.31511 3.51743 4 h after dark 5.59704 4.88346 6.31062 8 h after dark 4.451404999999999 4.17944 4.72337 12 h after dark 4.645535 4.30164 4.98943