condition mean min max 0 h after light 0.6203375 0.59681 0.643865 4 h after light 3.687635 3.41474 3.96053 8 h after light 4.36505 3.575 5.1551 4 h after dark 3.51396 2.77291 4.25501 8 h after dark 2.21343 2.21137 2.21549 12 h after dark 1.0384975 0.641855 1.43514