condition mean min max 0 h after light 2.28841 2.28637 2.29045 4 h after light 1.72838 1.12712 2.32964 8 h after light 1.2234645 0.831209 1.61572 4 h after dark 1.2866335 0.801967 1.7713 8 h after dark 1.94027 1.44758 2.43296 12 h after dark 1.77981 1.27632 2.2833