PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-13:58:10
G02     205.0          30.8                9.1 +/-    1.37      15.6 +/-    1.37  0.130 / 0.110
G06     155.1          70.5                9.9 +/-    1.10      10.4 +/-    1.10  0.090 / 0.110
G12     308.9          19.0                6.2 +/-    1.18      14.0 +/-    1.18  0.080 / 0.170
G17     37.7           47.6                6.9 +/-    0.39       9.0 +/-    0.39  0.110 / 0.230
G19     350.6          66.6                5.9 +/-    0.52       6.4 +/-    0.52  0.050 / 0.040
G24     295.0          40.0                7.7 +/-    0.69      11.2 +/-    0.69  0.040 / 0.030
G28     102.7          31.5                9.0 +/-    0.89      15.2 +/-    0.89  0.050 / 0.040