Fixed fig name MQ-7

Experiments/MQ7.eps

@@ -1,7 +1,7 @@
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 %%Title: MQ7.eps
 %%Creator: matplotlib version 3.0.3, http://matplotlib.org/
-%%CreationDate: Wed Jul  3 20:57:56 2019
+%%CreationDate: Wed Jul  3 20:58:22 2019
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@@ -42,7 +42,7 @@ newpath
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