Influence of Soil Nutrients, Tree Age, and Sandalwood Provenances on Sandalwood Oil Yield and Quality

Figure 2

Age versus oil yield. NB: Meaning of shaded part: This layer adds both the best-fitting regression line and also the 95% confidence interval for the line shown in grey shading. The outer edges of the shaded area represent the confidence bands, indicating the 95% confidence intervals for the mean of the Y-variable (Oil yield) at each value of the X-variable (tree age).