condition mean min max ZT0-3 58.75 58.75 58.75 ZT4-7 9.7 9.7 9.7 ZT8-11 58.099999999999994 58.099999999999994 58.099999999999994 ZT12-15 62.75 62.75 62.75 ZT16-19 47.9 47.9 47.9 ZT20-23 12.200000000000001 12.200000000000001 12.200000000000001