condition mean min max 4 h after light 2.480715 2.3884 2.57303 8 h after light 2.613355 2.5176 2.70911 12 h after light 2.346055 2.32876 2.36335 4 h after dark 3.59456 3.35286 3.83626 8 h after dark 3.9592549999999997 3.69703 4.22148 12 h after dark 3.464655 3.20295 3.72636