condition mean min max ZT0-3 34.827600000000004 34.827600000000004 34.827600000000004 ZT4-7 30.51195 30.51195 30.51195 ZT8-11 28.8314 28.8314 28.8314 ZT12-15 35.43575 35.43575 35.43575 ZT16-19 46.1511 46.1511 46.1511 ZT20-23 41.204800000000006 41.204800000000006 41.204800000000006