condition mean min max 4 h after light 3.417678 3.343095 3.5117599999999998 8 h after light 2.478644 1.5355809999999999 2.95345 12 h after light 2.2222443333333333 2.000819 2.582174 16 h after light 3.3059456666666667 2.692654 3.9243620000000004 4 h after dark 2.956910333333333 2.582837 3.258152 8 h after dark 4.516364 3.7880050000000005 4.8888110000000005