condition mean min max ZT0-3 198.0643 198.0643 198.0643 ZT4-7 133.6777975 133.6777975 133.6777975 ZT8-11 149.04533 149.04533 149.04533 ZT12-15 156.315297 156.315297 156.315297 ZT16-19 172.4408585 172.4408585 172.4408585 ZT20-23 155.044112 155.044112 155.044112