Table 2.

Parameter estimates (± 95% confidence intervals), z- and p-values for fixed effects averaged across the best fitting linear models (see “Methods”) relating bat activity in the 30 s after a train pass with distance corrected maximum SPL during the train pass, train noise frequency group and train length, controlling for effects of nightly bat pass total (total bat passes recorded during inter-train gaps per 3.5 h recording period), time since start of recording, and wind speed.

Fixed effects	Estimate	z	p
Distance corrected maximum SPL	0.008 ± 0.22	0.16	0.88
Train noise frequency group (low)	0.03 ± 0.55	0.21	0.83
Train length	− 0.02 ± 0.20	0.22	0.83
Night total bat passes	0.58 ± 0.18	6.44	< 0.0001
Time since start of recording	0.49 ± 0.22	4.34	< 0.0001
Wind speed	− 0.03 ± 0.05	0.70	0.49