PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/29-06:27:50
G10     259.0          32.9                6.1 +/-    2.05      10.1 +/-    2.05  0.080 / 0.240
G13     46.5           24.3                6.7 +/-    1.96      13.2 +/-    1.96  0.120 / 0.310
G15     68.8           53.5                6.9 +/-    0.61       8.4 +/-    0.61  0.110 / 0.220
G16     286.0          14.2                4.2 +/-    1.23      10.6 +/-    1.23  0.090 / 0.210
G20     357.7          68.9                5.2 +/-    0.32       5.5 +/-    0.32  0.040 / 0.030
G21     346.9          66.7                5.7 +/-    0.37       6.1 +/-    0.37  0.040 / 0.030
G24     126.6          9.6               -16.1 +/-    8.84     -45.4 +/-    8.84  0.040 / 0.040
G26     258.2          11.5                6.7 +/-    1.60      18.0 +/-    1.60  0.040 / 0.040
G27     321.3          13.1                1.8 +/-    2.53       4.7 +/-    2.53  0.250 / 0.310
G29     167.0          39.8                6.9 +/-    0.78      10.1 +/-    0.78  0.060 / 0.060