condition mean min max 4 h after light 164.5026965 161.234875 167.770518 8 h after light 199.26406 178.603756 219.924364 12 h after light 177.1956145 173.396558 180.994671 4 h after dark 228.159821 185.950765 270.368877 8 h after dark 208.667795 179.761146 237.574444 12 h after dark 145.866254 145.866254 145.866254