condition mean min max ZT0-3 343.180126 343.180126 343.180126 ZT4-7 202.3649715 202.3649715 202.3649715 ZT8-11 124.7131555 124.7131555 124.7131555 ZT12-15 186.5856495 186.5856495 186.5856495 ZT16-19 67.745633 67.745633 67.745633 ZT20-23 53.284073500000005 53.284073500000005 53.284073500000005