Table 1.

Comparison of NTP approaches for time synchronization.

Approach	Variance ( $\mathsf{\mu }$ ${\mathrm{s}}^2$ )	Std Dev ( $\mathsf{\mu }$ s)	Mean Accuracy ( $\mathsf{\mu }$ s)	Median Accuracy ( $\mathsf{\mu }$ s)
Dynamic NTP	$2.370\times {10}^8$	$1.540\times {10}^4$	$6.0642\times {10}^4$	$66,956$
Static NTP	$7.422\times {10}^8$	$2.724\times {10}^4$	$8.899\times {10}^3$	$-8.380\times {10}^3$
GPS-based NTP	$7.663\times {10}^6$	$2.768\times {10}^3$	$5.142\times {10}^4$	$1.8251\times {10}^4$