PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-09:12:30
G07     12.5           67.7                5.0 +/-    0.81       5.3 +/-    0.81  0.060 / 0.040
G08     64.0           47.8                4.4 +/-    1.45       5.8 +/-    1.45  0.040 / 0.060
G09     175.6          47.5                6.9 +/-    0.84       9.0 +/-    0.84  0.120 / 0.160
G11     130.6          26.7                5.5 +/-    1.69      10.4 +/-    1.69  0.130 / 0.110
G23     160.3          22.1                4.9 +/-    1.08      10.2 +/-    1.08  0.110 / 0.170
G27     41.7           19.5                3.8 +/-    1.88       8.5 +/-    1.88  0.080 / 0.170
G28     256.0          43.5                5.7 +/-    3.04       7.9 +/-    3.04  0.030 / 0.030
G30     317.2          47.8                4.1 +/-    1.04       5.3 +/-    1.04  0.040 / 0.030