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Number of hybrids, locations, and year-location combinations by region
| North | South | Total | |
|---|---|---|---|
| Hybridsa | 4344 | 3013 | 4372 |
| Locations | 25 | 13 | 38 |
| Year-locations | 97 | 39 | 136 |
aThe sum of the number of hybrids tested in the north and south is not equal to the total number of hybrids tested because many hybrids tested in northern locations were also tested in the south (see Supplementary Fig. 2).
