condition mean min max ZT0-3 0.2588485 0.1974735 0.3202235 ZT4-7 0.6248775 0.6248775 0.6248775 ZT8-11 1.066562 1.066562 1.066562 ZT12-15 0 0 0 ZT16-19 0.7679885 0.7679885 0.7679885 ZT20-23 0.9298759999999999 0.9298759999999999 0.9298759999999999