PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-06:27:40
G07     337.3          59.9                4.2 +/-    0.96       4.8 +/-    0.96  0.040 / 0.030
G08     100.9          52.3                6.8 +/-    0.40       8.4 +/-    0.40  0.040 / 0.040
G09     186.0          71.8                5.4 +/-    0.55       5.6 +/-    0.55  0.110 / 0.100
G11     146.4          14.3                3.9 +/-    2.79       9.7 +/-    2.79  0.090 / 0.090
G23     155.4          39.5                6.8 +/-    0.70      10.0 +/-    0.70  0.030 / 0.030
G27     54.6           31.3                3.8 +/-    1.68       6.5 +/-    1.68  0.030 / 0.030
G28     235.9          23.4                6.0 +/-    1.52      12.1 +/-    1.52  0.060 / 0.070
G30     301.7          34.4                3.5 +/-    1.25       5.6 +/-    1.25  0.070 / 0.080