K N I C T I N D E X r , t = ( I C T T e l e p h o n e I n d e x r , t + I C T M o b i l e I n d e x r , t + I C T B r o a d I n d e x r , t + I C T C o m p u t e r s I n d e x r , t ) / 4 {\displaystyle KNICTINDEX_{r,t}=(ICTTelephoneIndex_{r,t}+ICTMobileIndex_{r,t}+ICTBroadIndex_{r,t}+ICTComputersIndex_{r,t})/4}
I C T T e l e p h o n e I n d e x r , t = l o g ( I N F R A T E L E r , t ) / 3 {\displaystyle ICTTelephoneIndex_{r,t}=log(INFRATELE_{r,t})/3} I C T M o b i l e I n d e x r , t = I C T M O B I L r , t / 100 {\displaystyle ICTMobileIndex_{r,t}=ICTMOBIL_{r,t}/100} I C T B r o a d I n d e x r , t = I C T B R O A D r , t / 100 {\displaystyle ICTBroadIndex_{r,t}=ICTBROAD_{r,t}/100} <math>ICTComputersIndex_{r,t}=ICTCOMPUTERS_{r,t}/100
<math>ICTComputersIndex_{r,t}=ICTCOMPUTERS_{r,t}/100