Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.08494 -0.03211 -0.01284  0.01834  0.27114 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)   
(Intercept)  0.13309    0.04528   2.939  0.00340 **
xca         -0.11763    0.05229  -2.250  0.02479 * 
xcs         -0.07120    0.04961  -1.435  0.15164   
xda         -0.13306    0.05229  -2.545  0.01116 * 
xde         -0.10095    0.04593  -2.198  0.02827 * 
xel         -0.05427    0.04803  -1.130  0.25888   
xen         -0.09489    0.04534  -2.093  0.03674 * 
xes         -0.10191    0.04553  -2.238  0.02553 * 
xet         -0.11435    0.05229  -2.187  0.02909 * 
xfa         -0.06280    0.05546  -1.132  0.25788   
xfi         -0.08011    0.05546  -1.444  0.14909   
xfr         -0.10857    0.04564  -2.379  0.01765 * 
xhr         -0.08586    0.05229  -1.642  0.10105   
xhu         -0.07930    0.05063  -1.566  0.11773   
xis         -0.08066    0.05063  -1.593  0.11158   
xit         -0.10199    0.05229  -1.951  0.05153 . 
xiw         -0.12442    0.05546  -2.244  0.02519 * 
xja         -0.12083    0.05546  -2.179  0.02970 * 
xka         -0.10871    0.04961  -2.192  0.02875 * 
xko         -0.13309    0.04773  -2.788  0.00545 **
xky         -0.13307    0.06404  -2.078  0.03809 * 
xlt         -0.11514    0.05063  -2.274  0.02326 * 
xlv         -0.11299    0.05063  -2.232  0.02596 * 
xmng        -0.13308    0.06404  -2.078  0.03808 * 
xnl         -0.04399    0.04961  -0.887  0.37552   
xno         -0.11911    0.04841  -2.460  0.01413 * 
xpl         -0.08592    0.05546  -1.549  0.12179   
xpt         -0.08803    0.04635  -1.899  0.05794 . 
xro         -0.03818    0.05063  -0.754  0.45108   
xru         -0.10021    0.04773  -2.100  0.03614 * 
xsk         -0.07037    0.05229  -1.346  0.17880   
xsl         -0.09136    0.05063  -1.805  0.07159 . 
xsq         -0.13308    0.06404  -2.078  0.03808 * 
xsr         -0.07683    0.05546  -1.385  0.16640   
xsv         -0.08590    0.04891  -1.756  0.07949 . 
xth         -0.11357    0.05229  -2.172  0.03020 * 
xvi         -0.13076    0.05546  -2.358  0.01867 * 
xzh         -0.13308    0.05546  -2.400  0.01668 * 
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04528 on 674 degrees of freedom
Multiple R-squared:  0.07749,	Adjusted R-squared:  0.02685 
F-statistic:  1.53 on 37 and 674 DF,  p-value: 0.02453