--- a
+++ b/mit-bih-noise-stress-test-database-1.0.0/118e12.hea
@@ -0,0 +1,4 @@
+118e12 2 360 650000
+118e12.dat 212 200(1024) 11 0 -167 -10416 0 MLII
+118e12.dat 212 200(1024) 11 0 -103 -23139 0 V1
+# Created by `nst' from records 118 and em (SNR = 12 dB)