condition mean min max ZT0-3 11.380700000000001 11.380700000000001 11.380700000000001 ZT4-7 5.268905 5.268905 5.268905 ZT8-11 14.9427 14.9427 14.9427 ZT12-15 33.8251 33.8251 33.8251 ZT16-19 28.5818 28.5818 28.5818 ZT20-23 18.56335 18.56335 18.56335