0.5: Roughly 19 seconds 0.6: Roughly 14 seconds 0.7: Roughly 10 seconds 0.8: Roughly 7 seconds 0.9 and 1.0: Roughly 6 seconds When CONCORD is already on grid, the response time is severely reduced. The response time appears to drop between 2 seconds in 1.0 security to about 8 seconds in 0.6 and 9 seconds in 0.5.
When CONCORD has already spawned elsewhere in the system but is not yet on grid, the response time is significantly increased. In this case, it will take about 19 seconds for them to arrive and start firing in a 0.6 system, and 24 seconds in a 0.5 system.