condition mean min max ZT0-3 12.039200000000001 12.039200000000001 12.039200000000001 ZT4-7 12.82415 12.82415 12.82415 ZT8-11 13.17595 13.17595 13.17595 ZT12-15 14.0186 14.0186 14.0186 ZT16-19 11.4835 11.4835 11.4835 ZT20-23 10.18141 10.18141 10.18141