condition mean min max ZT0-3 179.03050000000002 179.03050000000002 179.03050000000002 ZT4-7 167.7 167.7 167.7 ZT8-11 171.9005 171.9005 171.9005 ZT12-15 136.72050000000002 136.72050000000002 136.72050000000002 ZT16-19 160.16 160.16 160.16 ZT20-23 172.4975 172.4975 172.4975