diff --git a/extra_credit_1/data.csv b/extra_credit_1/data.csv
index 8e4a5ce..3bca134 100644
--- a/extra_credit_1/data.csv
+++ b/extra_credit_1/data.csv
@@ -1,3 +1,8 @@
 radius (cm), angle (degrees)
 0, 0
 2.25, 62
+11.2, 19
+14.5, 232
+12.3, 271
+16.9, 120
+9.0, 177
diff --git a/lecture_01/lecture_01.md b/lecture_01/lecture_01.md
index 807e888..196a29e 100644
--- a/lecture_01/lecture_01.md
+++ b/lecture_01/lecture_01.md
@@ -106,6 +106,5 @@ plot(t,v_analytical,'-',t,v_numerical,'o-')
 
 ![plot of
 velocities](https://github.uconn.edu/rcc02007/ME3255S2017/blob/master/lecture_01/output_10_0.svg)
-<img
-src="https://github.uconn.edu/rcc02007/ME3255S2017/blob/master/lecture_01/output_10_0.svg">
+<img src="https://github.uconn.edu/rcc02007/ME3255S2017/blob/master/lecture_01/output_10_0.svg">