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 |