PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-03:12:40
G02     64.1           28.5                2.7 +/-    0.67       4.9 +/-    0.67  0.050 / 0.130
G05     51.8           55.2                5.6 +/-    0.35       6.6 +/-    0.35  0.070 / 0.130
G12     183.8          27.4                9.0 +/-    0.96      16.6 +/-    0.96  0.090 / 0.270
G13     124.6          18.5                6.8 +/-    1.57      15.4 +/-    1.57  0.110 / 0.250
G15     160.9          16.1                9.5 +/-    1.88      23.0 +/-    1.88  0.030 / 0.040
G20     219.9          24.9               11.2 +/-    2.90      21.9 +/-    2.90  0.040 / 0.040
G21     275.1          20.1                7.8 +/-    2.81      17.2 +/-    2.81  0.060 / 0.140
G25     231.4          48.4                9.5 +/-    1.81      12.3 +/-    1.81  0.060 / 0.120
G29     331.0          58.7                7.2 +/-    0.74       8.3 +/-    0.74  0.050 / 0.080