Appendix I: Additional EMX Information539Altitude Correction FactorsIf a Raritan differential air pressure sensor is attached to your device, thealtitude you enter for the device can serve as an altitude correction factor.That is, the reading of the differential air pressure sensor will bemultiplied by the correction factor to get a correct reading.This table shows the relationship between different altitudes andcorrection factors.Altitude (meters) Altitude (feet) Correction factor0 0 0.95250 820 0.98425 1394 1.00500 1640 1.01740 2428 1.041500 4921 1.152250 7382 1.263000 9842 1.38Ways to Probe Existing User ProfilesThis section indicates available ways to query existing user accounts onthe EMX. With SNMP v3 activated, you get the "user unknown" error when theuser name used to authenticate does not exist. Any user with the permission to view event rules can query all localexisting users via JSON RPC. Any user with the permission to view the event log may getinformation about existing users from the log entries. Any authenticated users can query currently-existing connectionsessions, including Webcam-Live-Preview sessions, which show alist of associated user names.