Scatter plots comparing PAR values measured by shadowband system with other accepted methods of quantifying PAR.

Dashed line represents ideal one-to-one relationship and grey wedge represents the 95% confidence interval computed using Deming regressions. a) PART vs. unobstructed quantum sensor b) PARD vs. Spitters c) PARD vs. Erbs d) PARDvs. Jacovides