condition mean min max ZT0-3 644.1500000000001 644.1500000000001 644.1500000000001 ZT4-7 387.4 387.4 387.4 ZT8-11 492.2 492.2 492.2 ZT12-15 348.0 348.0 348.0 ZT16-19 422.35 422.35 422.35 ZT20-23 590.8 590.8 590.8