condition mean min max ZT0-3 9.771572 9.771572 9.771572 ZT4-7 10.7319995 10.7319995 10.7319995 ZT8-11 8.9919785 8.9919785 8.9919785 ZT12-15 11.2793655 11.2793655 11.2793655 ZT16-19 9.4813095 9.4813095 9.4813095 ZT20-23 14.4046725 14.4046725 14.4046725