PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-17:12:50
G01     52.0           26.8                8.2 +/-    1.99      15.4 +/-    1.99  0.100 / 0.290
G06     177.1          24.1               12.1 +/-    1.54      24.1 +/-    1.54  0.090 / 0.350
G07     145.6          14.7               12.1 +/-    2.75      30.3 +/-    2.75  0.070 / 0.070
G11     45.2           16.8                9.1 +/-    2.78      21.7 +/-    2.78  0.040 / 0.060
G13     252.8          31.6                9.5 +/-    2.73      16.1 +/-    2.73  0.160 / 0.360
G15     287.7          15.4                9.0 +/-    0.63      22.3 +/-    0.63  0.130 / 0.470
G17     297.1          78.5               10.7 +/-    0.52      10.8 +/-    0.52  0.030 / 0.040
G19     242.0          55.5               11.2 +/-    2.62      13.3 +/-    2.62  0.030 / 0.030
G28     49.1           53.8               10.4 +/-    0.60      12.6 +/-    0.60  0.090 / 0.080
G30     148.8          44.1               12.0 +/-    0.76      16.4 +/-    0.76  0.060 / 0.060