Table 7.

Comparison of means and standard deviations among the three transmitting powers

Sensor	0 (dBm)		$-$5 (dBm)		$-$10 (dBm)
	$M$ (dBm)	SD	$M$ (dBm)	SD	$M$ (dBm)	SD
Sensor 1	$-$40.41	0.49	$-$51.02	0.67	$-$56.69	0.53
Sensor 2	$-$41.93	0.79	$-$49.12	0.87	$-$53.87	0.77
Sensor 3	$-$47.58	1.07	$-$53.26	1.11	$-$57.92	1.05
Sensor 4	$-$49.04	0.80	$-$51.25	0.88	$-$56.87	0.86