condition mean min max 4 h after light 59.6512 52.649 66.6534 8 h after light 50.5919 50.4763 50.7075 12 h after light 51.45745 47.95 54.9649 4 h after dark 57.9779 57.2598 58.4845 8 h after dark 65.98236666666666 64.9206 66.9026 12 h after dark 57.6819 56.6318 59.7474