Detection and Function of Elastic Wave Tomography of Foundation Piles of High-Rise Buildings under the Background of Internet of Things

Table 3

Profile inspection data.

	Sound velocity (km/s)	Amplitude (dB)	Sound time (μs)	PSD (μs^2/m)	Frequency (kHz)
Maximum	5.09	104.6	228	5780	49.019
Minimum value	3.728	73.3	167	0	19.607
Average value	4.614	97.85	185.7	121.03	37.523
Standard deviation	0.189	4.71	9.5		3.832
Deviation	4.10%	4.81%	5.10%		10.21%