condition mean min max ZT0-3 242.0 242.0 242.0 ZT4-7 383.4 383.4 383.4 ZT8-11 334.9 334.9 334.9 ZT12-15 397.95 397.95 397.95 ZT16-19 314.1 314.1 314.1 ZT20-23 320.3 320.3 320.3