SiGLE_RT computes radiation doses aboard aircraft during GLEs (Ground Level Events: enhancement of the counts as seen by the worldwide neutron monitors network due to solar events). SiGLE_RT is the real time version of the SiGLE model, which performs a post event dose computation within the SIEVERT system.  During quiet times the radiation doses shown below are due to galactic cosmic rays as computed by CARI7 computer program, developed at the FAA's Civil Aerospace Medical Institute (previous release was using EPCARD model for GCR display). An event example (january 2005) can be found here. Please note that these maps are not provided as an operational service. See also the disclaimer below.

Below is the status of neutron monitors of mid or low cutoff rigidity regarding a GLE alert, as computed by SiGLE_RT from available data in NMDB. There are three possible levels: "quiet", "prealert", or "alert" which are updated every 3 minutes. "Alert" means a GLE is ongoing. The general alert or prealert status is defined depending on the number of individual stations in alert or prealert mode, among other criteria. The individual alert levels depend on the increase seen in the last minutes compared to a preincrease level. Please note that this is not provided as an operational service. See also the disclaimer page.

Table columns description: #1 short name of the NM station, #2 alert level of this station (quiet / prealert / alert), irrespective of other NMs #3 timestamp of last available data (orange and red stations are late by more than 5 or 10 min respectively), #4 maximum increase seen during the last 5 minutes of data compared to a preceding level.