condition mean min max ZT0-3 149.7535 144.5505 154.9315 ZT4-7 132.8325 132.8325 132.8325 ZT8-11 157.823 157.823 157.823 ZT12-15 137.582 133.28 141.88400000000001 ZT16-19 151.4925 151.4925 151.4925 ZT20-23 143.767 143.767 143.767