condition mean min max ZT0-3 89.17381 89.17381 89.17381 ZT4-7 99.1576695 99.1576695 99.1576695 ZT8-11 83.337946 83.337946 83.337946 ZT12-15 87.981083 87.981083 87.981083 ZT16-19 75.167552 75.167552 75.167552 ZT20-23 68.0264605 68.0264605 68.0264605