condition mean min max 4 h after light 54.583768 30.680269 78.487267 8 h after light 37.4878295 30.680269 44.29539 12 h after light 37.358145 30.191645 44.524645 4 h after dark 17.071708 16.417913 17.725503 8 h after dark 18.523161 15.996883 21.049439 12 h after dark 54.326199 54.326199 54.326199