condition mean min max ZT0-3 10.905100000000001 10.905100000000001 10.905100000000001 ZT4-7 11.259265 11.259265 11.259265 ZT8-11 10.06354 10.06354 10.06354 ZT12-15 12.67605 12.67605 12.67605 ZT16-19 13.5228 13.5228 13.5228 ZT20-23 10.451049999999999 10.451049999999999 10.451049999999999