condition mean min max ZT0-3 0.05274504575 0.0 0.1054900915 ZT4-7 0.44181294025 0.0 0.8836258805 ZT8-11 5.799631455750001 4.2907802880000006 7.308482623500001 ZT12-15 12.72130353 12.27282915 13.16977791 ZT16-19 7.304385112249999 6.678041115 7.9307291095 ZT20-23 5.577224142 5.293302313 5.861145971000001