condition mean min max ZT0-3 76.002922 76.002922 76.002922 ZT4-7 97.73080150000001 97.73080150000001 97.73080150000001 ZT8-11 77.807141 77.807141 77.807141 ZT12-15 82.5252295 82.5252295 82.5252295 ZT16-19 72.6278235 72.6278235 72.6278235 ZT20-23 76.3707665 76.3707665 76.3707665