condition mean min max 4 h after light 230.827853 197.315763 264.339943 8 h after light 206.916881 204.985835 208.847927 12 h after light 227.85694 209.962438 245.751442 4 h after dark 211.5905395 208.847927 214.333152 8 h after dark 148.0945955 141.616672 154.572519 12 h after dark 214.693515 214.693515 214.693515