condition mean min max ZT0-3 82.42650108250001 81.017060915 83.83594125 ZT4-7 83.41091524000001 80.47858205 86.34324843 ZT8-11 80.76631436166667 76.36368650666667 85.16894221666666 ZT12-15 87.09753990333334 78.91816121666668 95.27691859000001 ZT16-19 78.95097239166667 75.55459847666667 82.34734630666667 ZT20-23 76.72350068666667 72.88267884333334 80.56432253