condition mean min max ZT0-3 180.107 180.107 180.107 ZT4-7 147.2355 147.2355 147.2355 ZT8-11 128.2665 128.2665 128.2665 ZT12-15 144.62849999999997 144.62849999999997 144.62849999999997 ZT16-19 182.3075 182.3075 182.3075 ZT20-23 195.348 195.348 195.348