SlatsCast shadow↑ Pergola angle● Sun position
Solar elevation—
Solar azimuth—
Ray travel to ground—
Slat profile
Coverage —Shade coverage across the year
Sampled at each local hour on the first day of every month.
Calculation
Solar position follows the NOAA fractional-year approximation. Refraction is not applied; pergola shadow geometry uses the geometric solar elevation.
| Quantity | Value |
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