condition mean min max ZT0-3 76.5432 76.5432 76.5432 ZT4-7 71.3358 71.3358 71.3358 ZT8-11 65.5476 65.5476 65.5476 ZT12-15 78.7933 78.7933 78.7933 ZT16-19 88.5669 88.5669 88.5669 ZT20-23 97.08070000000001 97.08070000000001 97.08070000000001