Daylight Factor Contours
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7. Daylight factor contours

If the overall distribution of daylight in a room is to be predicted, the best method is to set out a grid and calculate the SC and ERC for each of the grid-points. The average IRC can then be found, corrected by factor D, and added to each value, after which the factors M, G and B can be applied. By interpolating between grid-point values, a set of daylight factor contours can be drawn, indicating the distribution of daylight.

Figure 15 The Effect of Window Shape on DF