condition mean min max ZT0-3 132.742911 132.742911 132.742911 ZT4-7 130.217257 130.217257 130.217257 ZT8-11 141.71318100000002 141.71318100000002 141.71318100000002 ZT12-15 127.44315399999999 127.44315399999999 127.44315399999999 ZT16-19 218.8764585 218.8764585 218.8764585 ZT20-23 145.6364265 145.6364265 145.6364265