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Most of the traffic from India and Pakistan goes via Europe and US and then returns to South Asia. Due to this reason the average RTT from India and pakistan to other South Asian countries is below the acceptable mark.
South Asia as compared to the rest of the world regions
From SLAC 
Normalized TCP Throughput (ii) Packet Loss (iii) Min RTT to World Regions
Fig (iii) shows the drop in the Minimum RTT from 2002-2006 as the result of gradual shift from Satellite to fiber.
TCP throughput from CERN to World Regions
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