diff --git a/quad8/continuummechanics/lab/p4/data/ws_vs_qs.dat b/quad8/continuummechanics/lab/p4/data/ws_vs_qs.dat
new file mode 100644
index 0000000..73ee4aa
--- /dev/null
+++ b/quad8/continuummechanics/lab/p4/data/ws_vs_qs.dat
@@ -0,0 +1,10 @@
+110.99 15
+109.39 13
+100.2 11
+80.16 9
+76.09 7
+66.77 5
+52.14 4
+41.41 3
+34.15 2
+19.75 1