condition mean min max 4 h after light 38.292797 31.911976 44.673618 8 h after light 46.5407685 44.673618 48.407919 12 h after light 50.43191 43.512343 57.351477 4 h after dark 42.065567 38.415627 45.715507 8 h after dark 28.4476245 27.72549 29.169759 12 h after dark 14.813424 14.813424 14.813424