Standard output file extension for files recorded with the PopulationRateMonitor. Simple columnar time series format in which the first column contains the time index and the second column contains the population rate in Hz.

Output from the example code sim_poisson in which a single PoissonGroup spikes at 5Hz, invoked with ./sim_poisson –simtime 10

0 0.001
1 5.017
2 4.968
3 4.99
4 4.88
5 4.938
6 4.882
7 4.904
8 4.912
9 5.096