condition mean min max 4 h after light 5.43758 5.29686 5.673019999999999 8 h after light 5.23493 5.171819999999999 5.285830000000001 12 h after light 5.17118 5.13692 5.22893 4 h after dark 5.251916666666666 5.20094 5.27745 8 h after dark 5.39312 5.14928 5.65822 12 h after dark 5.3382966666666665 5.10187 5.6413400000000005