condition mean min max ZT0-3 287.95 287.95 287.95 ZT4-7 315.4 315.4 315.4 ZT8-11 295.5 295.5 295.5 ZT12-15 307.8 307.8 307.8 ZT16-19 322.29999999999995 322.29999999999995 322.29999999999995 ZT20-23 420.9 420.9 420.9