condition mean min max 4 h after light 3.171368 2.9073450000000003 3.578837 8 h after light 2.1271286666666667 1.481519 2.594325 12 h after light 2.3480803333333333 1.402692 3.0836580000000002 16 h after light 7.249392 6.221928 8.128960000000001 4 h after dark 5.473045333333332 2.7610919999999997 9.209636999999999 8 h after dark 1.8802560000000001 1.486452 2.29802