Research Article

Optimal Relay Angle-Based Clustering Routing Protocol for Wireless Sensor Networks

Figure 5

Comparison of the Standard deviation of residual energy versus rounds.
(a) Standard deviation of RE in scenario #1 with 100 nodes
(b) Standard deviation of RE in scenario #1 with 200 nodes
(c) Standard deviation of RE in scenario #3 with 100 nodes
(d) Standard deviation of RE in scenario #4 with 200 nodes