condition mean min max 4 h after light 1.419181 0.785533 2.25343 8 h after light 1.2696346666666667 0.370724 2.23948 12 h after light 1.7838533333333333 1.02058 2.81638 4 h after dark 2.20539 1.74328 2.82394 8 h after dark 2.01614 1.68971 2.29598 12 h after dark 1.8638033333333335 1.41351 2.55595