A. Winter data factors compared to Davis and Vaughan factors
| Factors | r | r2 |
|---|---|---|
| Factor 1 | 0.94 | 0.90 |
| Factor 2 | 0.90 | 0.88 |
| Factor 3 | 0.95 | 0.94 |
| Factor 4 | 0.82 | 0.67 |
| Mean | 0.91 | 0.87 |
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