condition mean min max ZT0-3 1084.4 1084.4 1084.4 ZT4-7 569.1 569.1 569.1 ZT8-11 583.75 583.75 583.75 ZT12-15 701.0 701.0 701.0 ZT16-19 894.5 894.5 894.5 ZT20-23 1001.0 1001.0 1001.0