condition mean min max 4 h after light 219.33 210.711 227.949 8 h after light 121.382 118.413 124.351 12 h after light 80.6246 77.7077 83.5415 4 h after dark 52.11933333333333 50.3169 53.6633 8 h after dark 99.9639 92.3664 111.547 12 h after dark 176.447 171.233 183.207