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Table 9 Data extraction from primary studies

From: Surveillance and security: protecting electricity utilities and other critical infrastructures

Primary study

GQ1

GQ2

GQ3

FQ1

FQ2

FQ3

S1

X

  

X

  

S2

X

X

X

X

X

 

S3

X

X

  

X

X

S4

X

X

X

   

S5

X

X

  

X

 

S6

X

X

  

X

 

S7

X

  

X

  

S8

X

X

X

X

X

 

S9

X

 

X

 

X

 

S10

X

X

 

X

X

 

S11

X

X

X

X

  

S12

X

   

X

 

S13

X

X

X

   

S14

X

X

  

X

 

S15

X

X

X

X

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