PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-08:58:00
G07     14.3           67.9                2.7 +/-    0.60       2.9 +/-    0.60  0.040 / 0.040
G08     63.1           47.4                2.6 +/-    0.71       3.3 +/-    0.71  0.060 / 0.050
G09     175.4          46.6                5.1 +/-    0.88       6.7 +/-    0.88  0.050 / 0.100
G11     130.0          27.1                4.8 +/-    0.96       8.9 +/-    0.96  0.050 / 0.090
G23     160.4          21.6                5.1 +/-    1.43      10.9 +/-    1.43  0.030 / 0.040
G27     41.5           19.1                2.4 +/-    0.61       5.5 +/-    0.61  0.030 / 0.040
G28     256.7          43.8                4.0 +/-    1.16       5.4 +/-    1.16  0.040 / 0.050
G30     317.7          48.3                3.0 +/-    0.34       3.9 +/-    0.34  0.040 / 0.050