condition mean min max ZT0-3 99.684875 95.24025 104.12950000000001 ZT4-7 80.45315 80.45315 80.45315 ZT8-11 167.7345 167.7345 167.7345 ZT12-15 0 0 0 ZT16-19 188.94 188.94 188.94 ZT20-23 136.8175 136.8175 136.8175