condition mean min max 0 h after light 18.29035 16.6986 19.8821 4 h after light 48.13915 43.5128 52.7655 8 h after light 39.6411 31.2097 48.0725 4 h after dark 43.0346 42.8824 43.1868 8 h after dark 38.4043 31.9485 44.8601 12 h after dark 27.037 14.7625 39.3115