condition mean min max ZT0-3 117.65 117.65 117.65 ZT4-7 100.2 100.2 100.2 ZT8-11 144.35 144.35 144.35 ZT12-15 86.0 86.0 86.0 ZT16-19 113.80000000000001 113.80000000000001 113.80000000000001 ZT20-23 127.7 127.7 127.7