RN Stations

Network	Station	Latitude	Longitude	ProposedOperator	Distance	Duration	Closest	Distance	Duration

All Other Stations

Network	Station	Latitude	Longitude	ProposedOperator	Distance	Duration	Closest	Distance	Duration

Options

• rncode: The code of the regional network you are interested in, used to fill in the first table. Code should be one of USCC, SLU, CERI, CERI_NC, CERI_KX, LDEO, VPI, UKY, NESN
• exclude: List of regional network, same as above, to exclude from closest distance calculations.
• closest: true or false, map stations based on closest (true) or proposed (false)
• maxhours: maximum travel time hours for closest calculation. Stations beyond this value default to IRIS

For example, to limit drive time to 4 hours (I am so tired of being stuck in this car!), exclude CERI (sorry Mitch), plot closest RN and see the USCC stations at the top, try: http://www.seis.sc.edu/~crotwell/N4Distance/n4dist.html?rncode=USCC&exclude=CERI,CERI_KX,CERI_NC&maxhours=4&closest=true

2017 Philip Crotwell, University of South Carolina