PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-07:43:10
G07     330.7          57.3                3.4 +/-    0.75       4.0 +/-    0.75  0.070 / 0.120
G08     99.6           50.8                6.3 +/-    0.48       7.9 +/-    0.48  0.080 / 0.110
G09     179.3          71.6                5.0 +/-    0.73       5.2 +/-    0.73  0.030 / 0.050
G11     146.1          12.4                6.1 +/-    2.43      16.1 +/-    2.43  0.030 / 0.040
G23     155.3          45.1                7.3 +/-    0.79       9.8 +/-    0.79  0.040 / 0.090
G27     58.3           33.6                3.7 +/-    0.68       5.9 +/-    0.68  0.050 / 0.080
G28     235.3          26.9                3.7 +/-    1.43       7.0 +/-    1.43  0.040 / 0.060
G30     299.3          32.3                3.6 +/-    1.70       6.0 +/-    1.70  0.040 / 0.080