Distribution of Values for
Maturity group (MATGROUP)
| Code | Definition | Number of Accessions | |
| 0 | MATURITY GROUP 0 | 1176 | |
| 00 | MATURITY GROUP 00 | 536 | |
| 000 | MATURITY GROUP 000 | 147 | |
| I | MATURITY GROUP I | 1745 | |
| II | MATURITY GROUP II | 2071 | |
| III | MATURITY GROUP III | 1985 | |
| IV | MATURITY GROUP IV | 4108 | |
| IX | MATURITY GROUP IX | 30 | |
| V | MATURITY GROUP V | 2721 | |
| VI | MATURITY GROUP VI | 1551 | |
| VII | MATURITY GROUP VII | 944 | |
| VIII | MATURITY GROUP VIII | 913 | |
| X | MATURITY GROUP X | 1 | |