PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-19:28:00
G07     328.9          56.3               11.0 +/-    0.94      13.0 +/-    0.94  0.050 / 0.080
G08     110.2          51.8               12.7 +/-    0.34      15.7 +/-    0.34  0.050 / 0.090
G09     199.2          76.6               11.3 +/-    1.45      11.6 +/-    1.45  0.080 / 0.200
G11     149.0          11.1               16.8 +/-   13.88      45.9 +/-   13.88  0.120 / 0.190
G23     153.6          40.6               14.2 +/-    0.95      20.4 +/-    0.95  0.040 / 0.080
G27     56.7           32.4               10.3 +/-    0.62      17.2 +/-    0.62  0.060 / 0.080
G28     235.8          28.2               15.2 +/-    2.88      27.6 +/-    2.88  0.040 / 0.060
G30     301.6          35.7               12.3 +/-    1.31      19.2 +/-    1.31  0.040 / 0.050