condition mean min max 4 h after light 3.4354913333333332 3.277745 3.5941419999999997 8 h after light 2.343775 1.630566 2.716128 12 h after light 2.131356666666667 1.405512 3.237156 16 h after light 3.268177 2.7230990000000004 3.8558769999999996 4 h after dark 2.761013 2.460697 3.208787 8 h after dark 1.8506903333333333 1.6768319999999999 2.11729