PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-12:27:50
G07     336.0          59.5                5.2 +/-    0.86       5.9 +/-    0.86  0.250 / 0.310
G08     107.0          51.0                7.9 +/-    0.66       9.9 +/-    0.66  0.080 / 0.210
G09     201.1          77.5                6.6 +/-    0.28       6.7 +/-    0.28  0.150 / 0.270
G11     147.2          12.2                7.4 +/-    2.60      19.6 +/-    2.60  0.210 / 0.250
G16     46.0           9.7                 5.5 +/-    2.72      15.4 +/-    2.72  0.040 / 0.040
G23     153.4          41.6                7.2 +/-    1.28      10.2 +/-    1.28  0.040 / 0.050
G27     58.9           33.7                5.9 +/-    1.00       9.5 +/-    1.00  0.060 / 0.080
G28     233.6          21.9                7.0 +/-    1.43      14.7 +/-    1.43  0.050 / 0.060
G30     301.0          35.4                5.6 +/-    1.16       8.9 +/-    1.16  0.170 / 0.670