Length.class2 Im Mat Prop
(26,28] 27 2 0 0.0000000
(28,30] 29 2 0 0.0000000
(30,32] 31 0 0 NaN
(32,34] 33 1 3 0.7500000
(34,36] 35 1 1 0.5000000
(36,38] 37 1 2 0.6666667
(38,40] 39 0 1 1.0000000
(40,42] 41 0 0 NaN
(42,44] 43 0 0 NaN
(44,46] 45 0 0 NaN
(46,48] 47 1 0 0.0000000
(48,50] 49 1 0 0.0000000