## 3 Results

Table 5: Shows the distribution of measurements from broadband (700–2500 MHz) in fifteen subbands according to the number of data points, total electric field, and average electric field. The mathematical expressions of the curves applied to the measurement results are given below (CP). \[F(x;m,\Omega)_{nakagami}=P\Big{(}m,\ \frac{m}{\Omega}x^{2}\Big{)}=\frac{\gamma \big{(}m,\frac{m}{\Omega}x^{2}\big{)}}{\Gamma(m)} \tag{23}\]  
\[F(x;c,k)_{burr}=1-(1+x^{c})^{-k},\ \ c>0;k>0 \tag{24}\]  
\[F(x)_{birthbaum-saunders}=\varnothing\left(\frac{\sqrt{x}-\sqrt{\frac{1}{x}}}{ \gamma}\right),x>0;\gamma>0 \tag{25}\]  
\[F(x;\alpha,\beta)_{log-logistic}=\frac{x^{\beta}}{x^{\beta}+\alpha^{\beta}},\ x>0;\alpha>0;\beta>0 \tag{26}\]  
In Figure 12, the SAR values created by the broadband electric field values in the human head and brain in four environments are given, as well as the limit values recommended by ICNIRP and accepted by FCC and CE for the general public, and their variations. As can be seen from Figure 12, SAR values in the other three environments, except the kitchen environment, exceed both (FEC and CE) limit values. It is seen that the limit values are exceeded greatly in the entrance and living room environments where the wireless modem is located. Especially in the entrance environment, the highest SAR value measured is 3.75 W/kg and its average is 1.74 W/kg, and this average is seen to be above the FCC's limit value. The highest SAR value measured was 4.69 W/kg in the living room environment, and this value is 293.12% of the FCC and 234.5% of the CE. It can be seen that most of the SAR value occurring in the head part of the entrance environment is above the limit values of both CE and FCC. In Table 6, considering the middle frequencies of the six sub-bands, all the electrical variations of each of the six layers are shown in the table by finding the (\(\varepsilon_{r}\), \(\sigma\)) at these frequencies. Table 7 shows the comparison between the changes revealed in the studies carried out in this field so far and my proposed study. Figure 12: Change of 12 (**a**) bedroom, 12 (**b**) livingroom, 12 (**c**) entrance and 12 (**d**) kitchen SAR values in the head and brain in four environments over time, taking into account the limit values of FCC and EC. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Reference** & \begin{tabular}{c} **Measured Frequency** \\ **Range** \\ \end{tabular}  & **Measurement Time** & **Measured Quantity** & **Measured Area** & **Calculated and Plotted Values** \\ \hline
[18] & 4G, 5G LTE & 6 min & E & Columbia, SC, In the city center in USA & \begin{tabular}{c} Histogram of spatial field \\ distribution measurements \\ \end{tabular}  \\ \hline
[20] & 50 Hz, broadband (700-2500 MHz) & 6 min & E & \begin{tabular}{c} Low-frequency electric field measurement of \\ broadband and high voltage was carried out in \\ Bursa Niktur municipality (Turkey). \\ \end{tabular}  & E \\ \hline
[21] & broadband (700-2500 MHz) & 6 min & E & A 6 min measurement was made at 213 points at 6 phase stations in Ordu (Turkey). & E, pdf \\ \hline
[22] & broadband (700-2500 MHz) & 6 min & E & In Ordu (Turkey) 500 points broadband electric field in 6 min & E, cdf, pdf \\ \hline
[32] & 100 kHz-3 GHz & 24 h & E & Outdoor at 5 points in Samsanu city cross base & E, E density curve fitting, Emax,