condition mean min max ZT0-3 21.3504 18.06055 24.64025 ZT4-7 44.62675 44.62675 44.62675 ZT8-11 215.25150000000002 215.25150000000002 215.25150000000002 ZT12-15 0 0 0 ZT16-19 105.0068 105.0068 105.0068 ZT20-23 33.2254 33.2254 33.2254