condition mean min max ZT0-3 83.2053 83.2053 83.2053 ZT4-7 83.04625 83.04625 83.04625 ZT8-11 75.263 75.263 75.263 ZT12-15 89.8029 89.8029 89.8029 ZT16-19 85.7603 85.7603 85.7603 ZT20-23 77.0461 77.0461 77.0461