condition mean min max 4 h after light 190.1 190.1 190.1 8 h after light 180.55 150.3 210.8 12 h after light 283.4 199.7 367.1 4 h after dark 477.25 361.0 593.5 8 h after dark 637.65 599.3 676.0 12 h after dark 510.15 468.5 551.8