condition mean min max ZT0-3 382.55304 382.55304 382.55304 ZT4-7 230.894596 230.894596 230.894596 ZT8-11 239.59248150000002 239.59248150000002 239.59248150000002 ZT12-15 349.92318750000004 349.92318750000004 349.92318750000004 ZT16-19 436.6542745 436.6542745 436.6542745 ZT20-23 359.5815745 359.5815745 359.5815745