condition mean min max 4 h after light 324.4 324.4 324.4 8 h after light 294.4 225.6 363.2 12 h after light 293.0 254.8 331.2 4 h after dark 320.75 295.7 345.8 8 h after dark 398.9 380.5 417.3 12 h after dark 361.35 310.0 412.7