condition mean min max 4 h after light 3.58075 2.60562 4.55588 8 h after light 4.196065 4.1883 4.20383 12 h after light 3.258305 3.07293 3.44368 4 h after dark 6.14967 4.77449 7.52485 8 h after dark 4.42555 3.88721 4.96389 12 h after dark 4.33939 3.99595 4.68283