condition mean min max ZT0-3 55.8 55.8 55.8 ZT4-7 156.2 156.2 156.2 ZT8-11 131.6 131.6 131.6 ZT12-15 153.45 153.45 153.45 ZT16-19 127.55000000000001 127.55000000000001 127.55000000000001 ZT20-23 100.80000000000001 100.80000000000001 100.80000000000001