condition mean min max ZT0-3 58.370400000000004 58.370400000000004 58.370400000000004 ZT4-7 46.0929 46.0929 46.0929 ZT8-11 51.173950000000005 51.173950000000005 51.173950000000005 ZT12-15 60.9781 60.9781 60.9781 ZT16-19 58.39165 58.39165 58.39165 ZT20-23 52.52315 52.52315 52.52315