condition mean min max ZT0-3 179.56936925000002 123.92490690000002 235.21383160000002 ZT4-7 96.2117302875 90.10358235000001 102.319878225 ZT8-11 98.330365065 97.91665685000001 98.74407328 ZT12-15 26.85976945825 9.3977724925 44.321766424 ZT16-19 12.0335879485 10.9668300215 13.1003458755 ZT20-23 13.787072320250001 11.689268830500001 15.88487581