condition mean min max ZT0-3 198.35000000000002 198.35000000000002 198.35000000000002 ZT4-7 92.1 92.1 92.1 ZT8-11 147.45 147.45 147.45 ZT12-15 156.3 156.3 156.3 ZT16-19 172.35 172.35 172.35 ZT20-23 150.65 150.65 150.65