condition mean min max 4 h after light 5.5158000000000005 3.47402 6.87065 8 h after light 4.58225 1.52227 7.64757 12 h after light 6.434453333333334 3.70837 10.4696 4 h after dark 15.874 11.7283 19.8795 8 h after dark 12.146033333333333 11.6986 12.5008 12 h after dark 9.13954 7.84519 10.8192