condition mean min max ZT0-3 50.0032 50.0032 50.0032 ZT4-7 51.472 51.472 51.472 ZT8-11 45.3685 45.3685 45.3685 ZT12-15 45.66025 45.66025 45.66025 ZT16-19 42.955600000000004 42.955600000000004 42.955600000000004 ZT20-23 47.6261 47.6261 47.6261