condition mean min max 4 h after light 156.395758 152.212475 160.579041 8 h after light 170.7959935 167.487929 174.104058 12 h after light 171.68927300000001 170.301086 173.07746 4 h after dark 209.093925 175.385903 242.801947 8 h after dark 182.227558 162.561479 201.893637 12 h after dark 158.194528 158.194528 158.194528