condition mean min max 4 h after light 145.473615 116.025126 174.922104 8 h after light 159.6517745 146.116041 173.187508 12 h after light 179.27144099999998 175.30898 183.233902 4 h after dark 241.847982 197.386984 286.30898 8 h after dark 218.28126650000002 184.001288 252.561245 12 h after dark 136.869866 136.869866 136.869866