Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.01038 -0.00790 -0.00532  0.00065  0.48364 

Coefficients:
              Estimate Std. Error t value Pr(>|t|)   
(Intercept)   0.005339   0.001619   3.298  0.00102 **
xNA          -0.003476   0.005877  -0.591  0.55439   
xnon-Annex I  0.005044   0.002101   2.400  0.01664 * 
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.02709 on 709 degrees of freedom
Multiple R-squared:  0.009819,	Adjusted R-squared:  0.007026 
F-statistic: 3.515 on 2 and 709 DF,  p-value: 0.03026