condition mean min max ZT0-3 11731.650000000001 11731.650000000001 11731.650000000001 ZT4-7 18424.9 18424.9 18424.9 ZT8-11 18742.050000000003 18742.050000000003 18742.050000000003 ZT12-15 16811.1 16811.1 16811.1 ZT16-19 14939.65 14939.65 14939.65 ZT20-23 11926.65 11926.65 11926.65