condition mean min max 4 h after light 218.1 218.1 218.1 8 h after light 199.2 181.6 216.8 12 h after light 225.8 202.2 249.4 4 h after dark 236.75 197.2 276.3 8 h after dark 225.79999999999998 193.2 258.4 12 h after dark 217.64999999999998 204.2 231.1