| N | Min | Max | Range | Mean | Var | Std | CV(%) |
251-10 | 50 | 7.97 | 32.25 | 24.28 | 25.32145 | 33.91368 | 5.823546 | 22.99828 |
251-12 | 50 | 10.72 | 30.58 | 19.86 | 19.82182 | 32.70048 | 5.718433 | 28.80928 |
251-14 | 50 | 7.75 | 36.72 | 28.97 | 17.74333 | 40.83903 | 6.390542 | 36.02029 |
251-16 | 50 | 6.84 | 58.22 | 51.38 | 21.71822 | 93.3389 | 9.661206 | 44.49562 |
251-18 | 50 | 3.61 | 31.77 | 28.16 | 17.762 | 44.81815 | 6.694636 | 37.66468 |