PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/05-08:28:00
G07     321.6          53.4                3.4 +/-    0.47       4.2 +/-    0.47  0.090 / 0.130
G08     108.2          48.4                6.4 +/-    0.55       8.3 +/-    0.55  0.110 / 0.150
G09     196.2          80.0                4.8 +/-    0.71       4.9 +/-    0.71  0.060 / 0.060
G16     44.6           11.2                2.8 +/-    1.90       7.5 +/-    1.90  0.050 / 0.060
G23     152.9          52.4                7.6 +/-    0.57       9.3 +/-    0.57  0.040 / 0.050
G27     64.6           35.5                3.4 +/-    1.23       5.3 +/-    1.23  0.040 / 0.060
G28     230.9          22.3                6.1 +/-    2.66      12.6 +/-    2.66  0.040 / 0.040
G30     294.2          27.7                2.3 +/-    1.72       4.2 +/-    1.72  0.040 / 0.040