condition mean min max 4 h after light 192.275762 179.474258 205.077266 8 h after light 266.3670915 260.031788 272.702395 12 h after light 418.1199865 386.528652 449.711321 4 h after dark 517.527024 383.653586 651.400462 8 h after dark 768.597441 539.924364 997.270518 12 h after dark 214.705403 214.705403 214.705403