condition mean min max ZT0-3 145.76348785000002 127.36670500000001 164.1602707 ZT4-7 88.8335274675 82.157757495 95.50929744000001 ZT8-11 78.681357705 74.24859251 83.1141229 ZT12-15 26.25121864575 7.818501062499999 44.683936229000004 ZT16-19 10.04688033375 9.0830700525 11.010690615 ZT20-23 13.6936855925 12.430548120000001 14.956823065