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Percentage increase in crop production estimated from 1980 to 201 if AOT40 had been 0 compared with historical values
| AOT40 | SUM06 | |||
| Crop | Mean, % | 95% confidence limits from bootstrapping, % | Mean, % | 95% confidence limits from bootstrapping, % |
| Soybean | 6.3 | 3.7–9.0 | 5.2 | 3.3–7.0 |
| Maize | 11.7 | 9.4–14.1 | 9.1 | 7.4–10.7 |
