condition mean min max ZT0-3 30.461550000000003 24.08765 36.83545 ZT4-7 20.86975 20.86975 20.86975 ZT8-11 18.1558 18.1558 18.1558 ZT12-15 0 0 0 ZT16-19 15.27215 15.27215 15.27215 ZT20-23 23.43995 23.43995 23.43995