condition mean min max 0 h after light 3.865895 3.65745 4.07434 4 h after light 2.31907 2.16363 2.47451 8 h after light 1.30533 1.22116 1.3895 4 h after dark 1.4844815 0.660943 2.30802 8 h after dark 2.15719 1.84429 2.47009 12 h after dark 4.15365 3.54439 4.76291