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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