Integral availability of GLONASS navigation (PDOP≤6) during the 24 hours period (mask angle ≥5°)
Date: 30.07.2021
Current constellation: 23 SC in operation (1,2,3,4,5,6,7,8,9,10,.12,13,14,15,16,17,18,19,20,21,22,23,24)

Note: availability is calculated using a current almanac for the 24 hours period as percentage of time during which the condition PDOP≤6 is valid at mask angles ≥5°, where PDOP is a position (three-dimensional) dilution of precision. Step of calculation: 4 minutes in duration and 1 degree over the surface