| Code | Definition | Number of Accessions |
| 2 | 1= [very deep], 2= [22.22% of protruded], 3= [deep], 4= [44.44% of protruded], 5= [intermediate], 6= [66.67% of protruded], 7= [flat], 8= [88.89% of protruded], 9= [protruded] | 3 |
| 3 | 1= [very deep], 2= [22.22% of protruded], 3= [deep], 4= [44.44% of protruded], 5= [intermediate], 6= [66.67% of protruded], 7= [flat], 8= [88.89% of protruded], 9= [protruded] | 6 |
| 4 | 1= [very deep], 2= [22.22% of protruded], 3= [deep], 4= [44.44% of protruded], 5= [intermediate], 6= [66.67% of protruded], 7= [flat], 8= [88.89% of protruded], 9= [protruded] | 8 |
| 5 | 1= [very deep], 2= [22.22% of protruded], 3= [deep], 4= [44.44% of protruded], 5= [intermediate], 6= [66.67% of protruded], 7= [flat], 8= [88.89% of protruded], 9= [protruded] | 18 |
| 6 | 1= [very deep], 2= [22.22% of protruded], 3= [deep], 4= [44.44% of protruded], 5= [intermediate], 6= [66.67% of protruded], 7= [flat], 8= [88.89% of protruded], 9= [protruded] | 16 |
| 7 | 1= [very deep], 2= [22.22% of protruded], 3= [deep], 4= [44.44% of protruded], 5= [intermediate], 6= [66.67% of protruded], 7= [flat], 8= [88.89% of protruded], 9= [protruded] | 28 |
| 8 | 1= [very deep], 2= [22.22% of protruded], 3= [deep], 4= [44.44% of protruded], 5= [intermediate], 6= [66.67% of protruded], 7= [flat], 8= [88.89% of protruded], 9= [protruded] | 8 |
| 9 | 1= [very deep], 2= [22.22% of protruded], 3= [deep], 4= [44.44% of protruded], 5= [intermediate], 6= [66.67% of protruded], 7= [flat], 8= [88.89% of protruded], 9= [protruded] | 4 |