condition mean min max 0 h after light 2.5832300000000004 2.48356 2.6829 4 h after light 1.929335 1.54024 2.31843 8 h after light 1.5308899999999999 1.34823 1.71355 4 h after dark 2.1054399999999998 2.10129 2.10959 8 h after dark 1.813475 1.75391 1.87304 12 h after dark 2.5498450000000004 2.48823 2.61146