condition mean min max 0 h after light 1.7062 0.98655 2.42585 4 h after light 1.79514 1.64491 1.94537 8 h after light 1.90334 1.69547 2.11121 4 h after dark 2.029575 1.85706 2.20209 8 h after dark 2.3073699999999997 2.03159 2.58315 12 h after dark 1.686145 1.40184 1.97045