condition mean min max ZT0-3 176.0 176.0 176.0 ZT4-7 94.5 94.5 94.5 ZT8-11 179.9 179.9 179.9 ZT12-15 262.55 262.55 262.55 ZT16-19 190.75 190.75 190.75 ZT20-23 222.60000000000002 222.60000000000002 222.60000000000002