
| Standard deviation of N. Central Corn Basis | |
| versus NCI | 3.4 cents per bushel |
| versus CBOT nearby | 7.0 cents per bushel |
| Note: Month-end prices through March 2005 | |

| Correlation between NCI-CBOT spread and N. Central Iowa Cash-Nearby CBOT: 91% | ||
| Note: Month-end prices through March 2005 |