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Equation for the relationship between light and illumination values at different snow depths.
| Snow depth/cm | Equation | R2 | Rate of change Lux/w |
|---|---|---|---|
| 0 | Y = 37.719x + 19.623 | 0.993a | 37.719 |
| 5 | Y = 254.061x + 165.917 | 0.993a | 254.061 |
| 10 | Y = 248.952x + 244.232 | 0.987a | 248.952 |
| 15 | Y = 267.027x + 228.091 | 0.993a | 267.027 |
| 20 | Y = 276.644x + 259.110 | 0.990a | 276.644 |
aThe significance level of the difference in means is 0.01.
