condition mean min max ZT0-3 61.89375 34.7339 89.0536 ZT4-7 46.21355 46.21355 46.21355 ZT8-11 174.988 174.988 174.988 ZT12-15 0 0 0 ZT16-19 202.80855000000003 202.80855000000003 202.80855000000003 ZT20-23 125.9269 125.9269 125.9269