condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.08705628450000001 0.0 0.17411256900000002 ZT16-19 0.0 0.0 0.0 ZT20-23 0.09293976783333334 0.0 0.18587953566666668