condition mean min max 4 h after light 22.5810735 15.912223 29.249924 8 h after light 24.1961105 19.846016 28.546205 12 h after light 18.4846155 18.010079 18.959152 4 h after dark 19.940005 19.705083 20.174927 8 h after dark 19.6476855 18.556413 20.738958 12 h after dark 16.745963 16.745963 16.745963