PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-03:13:10
G01     294.3          39.2                6.1 +/-    4.06       9.0 +/-    4.06  0.050 / 0.090
G03     310.5          12.6                5.5 +/-    2.27      14.4 +/-    2.27  0.070 / 0.080
G10     117.2          32.0                6.9 +/-    1.06      11.6 +/-    1.06  0.100 / 0.110
G11     266.3          27.8                8.1 +/-    1.31      14.8 +/-    1.31  0.090 / 0.070
G14     22.4           59.5                6.6 +/-    1.25       7.5 +/-    1.25  0.070 / 0.070
G22     313.0          35.4                6.5 +/-    1.56      10.3 +/-    1.56  0.050 / 0.080
G25     66.7           17.8                6.1 +/-    1.44      14.2 +/-    1.44  0.030 / 0.020
G31     151.8          76.3                7.9 +/-    0.68       8.1 +/-    0.68  0.030 / 0.020
G32     46.0           46.2                5.0 +/-    0.89       6.6 +/-    0.89  0.120 / 0.140