condition mean min max ZT0-3 67.3198970075 65.61660353 69.023190485 ZT4-7 67.68142764 66.65291606 68.70993922 ZT8-11 86.61777795500001 75.31116159333334 97.92439431666666 ZT12-15 105.58883082 101.75818613 109.41947551 ZT16-19 102.834877985 95.92137484333334 109.74838112666667 ZT20-23 90.65514809499999 83.19249002 98.11780617