diff --git a/_bookdown_files/_main_files/figure-html/unnamed-chunk-38-1.png b/_bookdown_files/_main_files/figure-html/unnamed-chunk-38-1.png
index 685f9bb..0686137 100644
Binary files a/_bookdown_files/_main_files/figure-html/unnamed-chunk-38-1.png and b/_bookdown_files/_main_files/figure-html/unnamed-chunk-38-1.png differ
diff --git a/_bookdown_files/_main_files/figure-html/unnamed-chunk-39-1.png b/_bookdown_files/_main_files/figure-html/unnamed-chunk-39-1.png
index 1ee9aa8..883dcb2 100644
Binary files a/_bookdown_files/_main_files/figure-html/unnamed-chunk-39-1.png and b/_bookdown_files/_main_files/figure-html/unnamed-chunk-39-1.png differ
diff --git a/_bookdown_files/_main_files/figure-html/unnamed-chunk-41-1.png b/_bookdown_files/_main_files/figure-html/unnamed-chunk-41-1.png
index 73c67f0..f934874 100644
Binary files a/_bookdown_files/_main_files/figure-html/unnamed-chunk-41-1.png and b/_bookdown_files/_main_files/figure-html/unnamed-chunk-41-1.png differ