condition mean min max 4 h after light 19.43708 19.045454 19.828706 8 h after light 30.6982845 29.924632 31.471937 12 h after light 45.9783285 45.666731 46.289926 4 h after dark 71.127872 64.673405 77.582339 8 h after dark 63.1555225 42.298835 84.01221 12 h after dark 26.13566 26.13566 26.13566