Table 3.

Exterior and interior RF power densities by distance and line of sight, Lookout Mountain, Golden, Colorado [μW/cm² (no. of subjects)].

		Percent of transmitters visible
Distance to transmitter	All subjects (n = 280)	≤ 50	> 50	p-Value, ≤ 50% vs. > 50%
Exterior average
≤ 1 km	2.92 (62)	1.67 (11)	3.32 (51)	0.100
> 1–2 km	1.00 (117)	0.21 (46)	2.66 (71)	< 0.001
> 2–3 km	0.13 (76)	0.05 (54)	1.49 (22)	< 0.001
> 3 km	0.06 (25)	0.04 (18)	0.13 (7)	0.050
p-Value, ≤ 1 vs. > 3 km	< 0.001	< 0.001	< 0.001
Interior house average
≤ 1 km	1.14 (62)	0.86 (11)	1.22 (51)	0.260
> 1–2 km	0.53 (117)	0.22 (46)	0.92 (71)	< 0.001
> 2–3 km	0.09 (76)	0.05 (54)	0.39 (22)	< 0.001
> 3 km	0.03 (25)	0.04 (18)	0.01 (7)	0.020
p-Value, ≤ 1 vs. > 3 km	< 0.001	< 0.001	< 0.001