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

Table 7

Coefficients of linear regression model (frequency ~ humidity) of girder No. 3.

Mode	Intercept	Gradient	Std. Error	(%)	(%)	Coefficient of determination
1	10.1603		0.0735	0.7236		0.2613
2	37.3333		0.3276	0.8774		0.5898
3	32.8495		2.0293	6.1777		0.3931