condition mean min max ZT0-3 62.921099999999996 62.921099999999996 62.921099999999996 ZT4-7 128.94150000000002 128.94150000000002 128.94150000000002 ZT8-11 76.51155 76.51155 76.51155 ZT12-15 23.61085 23.61085 23.61085 ZT16-19 12.34035 12.34035 12.34035 ZT20-23 20.672199999999997 20.672199999999997 20.672199999999997