
x's indicate 2/7/2009, arrows indicate extreme low coh_min and coh_mean readings.
* frequent <2 coh_mean and/or coh_min readings or coh floor drop.
* post-event extended degraded coh readings.
* post-event recovery spikes are common roughly two months after event conclusion


x's indicate 2/7/2009, arrows indicate extreme low coh_min and coh_mean readings.


