PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-15:12:50
G01     47.8           23.4                7.5 +/-    0.98      15.2 +/-    0.98  0.040 / 0.080
G06     177.3          27.9                9.6 +/-    1.37      17.5 +/-    1.37  0.050 / 0.080
G11     43.5           10.2                6.9 +/-    2.10      19.2 +/-    2.10  0.060 / 0.190
G13     249.8          28.8                9.5 +/-    1.09      17.0 +/-    1.09  0.060 / 0.200
G15     283.7          15.0                8.4 +/-    1.90      20.9 +/-    1.90  0.030 / 0.030
G17     341.0          76.9               10.3 +/-    0.75      10.5 +/-    0.75  0.020 / 0.030
G19     253.9          64.4                9.2 +/-    1.03      10.1 +/-    1.03  0.060 / 0.140
G28     57.0           51.6                9.2 +/-    0.76      11.4 +/-    0.76  0.050 / 0.140
G30     151.1          40.5                9.9 +/-    1.30      14.2 +/-    1.30  0.110 / 0.200