| Code | Definition | Number of Accessions |
| 2 | 1= [very deep], 2= [22.22% of very shallow], 3= [deep], 4= [44.44% of very shallow], 5= [medium], 6= [66.67% of very shallow], 7= [shallow], 8= [88.89% of very shallow], 9= [very shallow] | 2 |
| 3 | 1= [very deep], 2= [22.22% of very shallow], 3= [deep], 4= [44.44% of very shallow], 5= [medium], 6= [66.67% of very shallow], 7= [shallow], 8= [88.89% of very shallow], 9= [very shallow] | 7 |
| 4 | 1= [very deep], 2= [22.22% of very shallow], 3= [deep], 4= [44.44% of very shallow], 5= [medium], 6= [66.67% of very shallow], 7= [shallow], 8= [88.89% of very shallow], 9= [very shallow] | 10 |
| 5 | 1= [very deep], 2= [22.22% of very shallow], 3= [deep], 4= [44.44% of very shallow], 5= [medium], 6= [66.67% of very shallow], 7= [shallow], 8= [88.89% of very shallow], 9= [very shallow] | 16 |
| 6 | 1= [very deep], 2= [22.22% of very shallow], 3= [deep], 4= [44.44% of very shallow], 5= [medium], 6= [66.67% of very shallow], 7= [shallow], 8= [88.89% of very shallow], 9= [very shallow] | 19 |
| 7 | 1= [very deep], 2= [22.22% of very shallow], 3= [deep], 4= [44.44% of very shallow], 5= [medium], 6= [66.67% of very shallow], 7= [shallow], 8= [88.89% of very shallow], 9= [very shallow] | 25 |
| 8 | 1= [very deep], 2= [22.22% of very shallow], 3= [deep], 4= [44.44% of very shallow], 5= [medium], 6= [66.67% of very shallow], 7= [shallow], 8= [88.89% of very shallow], 9= [very shallow] | 7 |