PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/15-17:12:40
G03     188.9          19.0               11.2 +/-    0.95      25.4 +/-    0.95  0.090 / 0.050
G07     290.4          37.2               11.0 +/-    1.32      16.8 +/-    1.32  0.080 / 0.050
G08     145.3          26.8               11.8 +/-    1.73      22.1 +/-    1.73  0.030 / 0.030
G09     320.1          62.5               10.5 +/-    1.18      11.7 +/-    1.18  0.020 / 0.030
G16     42.6           37.3                9.0 +/-    1.17      13.7 +/-    1.17  0.070 / 0.030
G23     121.0          74.5               10.1 +/-    0.56      10.4 +/-    0.56  0.080 / 0.030
G26     43.6           9.6                 6.8 +/-    2.65      19.1 +/-    2.65  0.060 / 0.090
G27     98.3           34.0               10.3 +/-    1.54      16.6 +/-    1.54  0.050 / 0.120
G30     274.7          14.4                9.7 +/-    1.71      24.6 +/-    1.71  0.150 / 0.170