condition mean min max ZT0-3 87.6083 86.34615 88.87045 ZT4-7 75.85820000000001 75.85820000000001 75.85820000000001 ZT8-11 64.13025 64.13025 64.13025 ZT12-15 0 0 0 ZT16-19 79.89 79.89 79.89 ZT20-23 93.05205000000001 93.05205000000001 93.05205000000001