condition mean min max ZT0-3 0.45066376175 0.442158738 0.4591687855 ZT4-7 0.36949774175000005 0.15788013450000002 0.5811153490000001 ZT8-11 1.1187842055 0.10336397749999998 2.1342044335 ZT12-15 7.97467731775 6.5470399455 9.40231469 ZT16-19 9.42864416325 9.3369754495 9.520312877 ZT20-23 9.8283970205 8.826905118500001 10.8298889225