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

Table 5

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

Mode	Intercept	Gradient	Std. Error	(%)	(%)	Coefficient of determination
1	9.4902		0.0251	0.2643		0.8732
2	37.1382		0.1450	0.3904		0.8614
3	28.6544		1.2469	4.3514		0.0624