Add lab session 6

Handed in on Jan 24.

Change-Id: Ie36f75a2819ae0564f2a4f99bbb859a452156c22
diff --git a/p6/data/data_fit.dat b/p6/data/data_fit.dat
new file mode 100644
index 0000000..6358b09
--- /dev/null
+++ b/p6/data/data_fit.dat
@@ -0,0 +1,7 @@
+30.1		25.5			50
+32.0		27.0			50
+35.1		29.0			50
+38.3		30.5			50
+40.1		32.5			50
+42.6		34.0			50
+45.1		36.5			50