Long-Term Vibration Monitoring of the Effects of Temperature and Humidity on PC Girders with and without Fly Ash considering ASR Deterioration

Table 6

Coefficients of linear regression model (frequency ~ humidity) of girder No. 2.

Mode	Intercept	Gradient	Std. Error	(%)	(%)	Coefficient of determination
1	10.0751		0.0504	0.5005		0.6908
2	36.7092		0.6605	1.7993		0.4145
3	31.5830		3.0309	9.5965		0.0867