condition mean min max ZT0-3 159.684933 159.684933 159.684933 ZT4-7 120.5933205 120.5933205 120.5933205 ZT8-11 100.77709200000001 100.77709200000001 100.77709200000001 ZT12-15 127.8170425 127.8170425 127.8170425 ZT16-19 98.388147 98.388147 98.388147 ZT20-23 106.618781 106.618781 106.618781