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

Table 2

Coefficients of linear regression model (frequency ~ temperature) of girder No. 1.

Mode	Intercept	Gradient	Std. Error	(%)	(%)	Coefficient of determination
1	9.3641		0.0493	0.5269		0.4111
2	36.9501		0.1775	0.4803		0.7218
3	31.4923		1.0982	3.4872		0.3975