PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-15:28:00
G03     191.4          24.2               10.2 +/-    2.51      20.3 +/-    2.51  0.080 / 0.130
G07     285.6          34.4               10.4 +/-    1.39      16.6 +/-    1.39  0.080 / 0.150
G08     147.3          23.2               11.4 +/-    1.75      23.1 +/-    1.75  0.110 / 0.370
G09     320.7          58.0               10.0 +/-    0.92      11.6 +/-    0.92  0.050 / 0.090
G16     44.0           41.5                9.5 +/-    1.07      13.5 +/-    1.07  0.050 / 0.080
G23     106.3          77.9               10.3 +/-    0.59      10.5 +/-    0.59  0.120 / 0.130
G26     43.0           13.5                8.4 +/-    2.24      21.8 +/-    2.24  0.110 / 0.180
G27     104.3          31.8               12.0 +/-    1.05      20.3 +/-    1.05  0.020 / 0.040
G30     270.7          10.8              -11.7 +/-   23.83     -32.1 +/-   23.83  0.030 / 0.030