condition mean min max ZT0-3 181.85000000000002 181.85000000000002 181.85000000000002 ZT4-7 258.0 258.0 258.0 ZT8-11 253.04999999999998 253.04999999999998 253.04999999999998 ZT12-15 236.05 236.05 236.05 ZT16-19 146.7 146.7 146.7 ZT20-23 133.05 133.05 133.05