condition mean min max ZT0-3 9.0274775 8.58072 9.474235 ZT4-7 13.930150000000001 13.930150000000001 13.930150000000001 ZT8-11 13.84535 13.84535 13.84535 ZT12-15 0 0 0 ZT16-19 14.56365 14.56365 14.56365 ZT20-23 12.7791 12.7791 12.7791