This is the definition of #1 TAG site on shape model 3. It is typically called MTAG15.in. It is 1001 pixels wide with a GSD of 5cm (50m wide) 

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    -8.027 262.768 
   0.0000500       500   1.23400        1000
MTAG15
1
.005
.025
1
1
1
1
1
1
1
0
0