condition mean min max 2 h after light 1.5588633333333333 1.28612 1.81057 6 h after light 0.7344583333333333 0.55348 0.97704 10 h after light 1.5798566666666667 1.11768 1.9857 2 h after dark 2.86119 2.24097 3.29475 6 h after dark 2.1262399999999997 1.98968 2.23079 10 h after dark 1.77168 1.44004 1.95222