condition mean min max ZT0-3 0.039655166666666665 0.0 0.1189655 ZT4-7 0.0 0.0 0.0 ZT8-11 0.763115 0.763115 0.763115 ZT12-15 0.9946200000000001 0.4458805 1.5433595 ZT16-19 0.4189345 0.4189345 0.4189345 ZT20-23 0.349057 0.349057 0.349057