condition mean min max ZT0-3 1.0931065175 0.498467053 1.687745982 ZT4-7 11.1415851175 6.379586015000001 15.90358422 ZT8-11 19.623942132499998 18.699056640000002 20.548827624999998 ZT12-15 33.4061868175 23.51330449 43.299069145000004 ZT16-19 41.363041700000004 39.70712025 43.018963150000005 ZT20-23 54.139251985 49.28091001 58.99759396