condition mean min max ZT0-3 15.850000000000001 15.850000000000001 15.850000000000001 ZT4-7 50.9 50.9 50.9 ZT8-11 115.69999999999999 115.69999999999999 115.69999999999999 ZT12-15 212.05 212.05 212.05 ZT16-19 162.3 162.3 162.3 ZT20-23 59.6 59.6 59.6