condition mean min max ZT0-3 102.308984 102.308984 102.308984 ZT4-7 91.9122025 91.9122025 91.9122025 ZT8-11 91.298906 91.298906 91.298906 ZT12-15 108.0422805 108.0422805 108.0422805 ZT16-19 101.643122 101.643122 101.643122 ZT20-23 100.899277 100.899277 100.899277