condition mean min max ZT0-3 38.3501 38.3501 38.3501 ZT4-7 206.06150000000002 206.06150000000002 206.06150000000002 ZT8-11 173.7145 173.7145 173.7145 ZT12-15 76.0398 76.0398 76.0398 ZT16-19 12.149650000000001 12.149650000000001 12.149650000000001 ZT20-23 7.65962 7.65962 7.65962