condition mean min max ZT0-3 11.305375000000002 10.4093 12.201450000000001 ZT4-7 11.332370000000001 11.332370000000001 11.332370000000001 ZT8-11 10.7163 10.7163 10.7163 ZT12-15 0 0 0 ZT16-19 13.2346 13.2346 13.2346 ZT20-23 10.67895 10.67895 10.67895