condition mean min max 0 h after light 2.768665 2.21256 3.32477 4 h after light 4.180455 3.67405 4.68686 8 h after light 3.892335 3.3987 4.38597 4 h after dark 4.38401 4.00293 4.76509 8 h after dark 4.86641 4.75961 4.97321 12 h after dark 2.7252549999999998 2.15144 3.29907