Vibration-Based Damage Identification and Condition Monitoring of Metro Trains: Warsaw Metro Case Study

Table 2

Statistical analysis of functions of all trends for particular time periods.

Observation period	2003-2004		2008–2011
Equation coefficients
Average value	0.0088	341.58	0.0031	122.29
Standard deviation	0.0038	155.71	0.0039	155.11
Maximum value	0.0151	664.81	0.0159	626.52
Minimum value	0.0003	10.71	0.0002	9.41