PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-07:43:00
G07     330.1          57.0                5.0 +/-    0.44       5.9 +/-    0.44  0.030 / 0.040
G08     100.3          50.7                6.6 +/-    0.96       8.3 +/-    0.96  0.040 / 0.040
G09     179.6          72.1                7.2 +/-    0.43       7.5 +/-    0.43  0.060 / 0.080
G11     146.4          12.1                6.0 +/-    3.15      15.9 +/-    3.15  0.050 / 0.080
G23     155.1          45.6                7.5 +/-    0.82      10.0 +/-    0.82  0.110 / 0.100
G27     58.7           33.8                5.2 +/-    1.49       8.4 +/-    1.49  0.070 / 0.110
G28     234.9          26.5                4.6 +/-    1.76       8.7 +/-    1.76  0.040 / 0.060
G30     299.0          32.0                4.7 +/-    2.30       7.9 +/-    2.30  0.030 / 0.060