PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/05-09:27:50
G02     65.6           26.7                2.9 +/-    1.08       5.4 +/-    1.08  0.020 / 0.030
G05     51.1           54.7                4.6 +/-    0.61       5.5 +/-    0.61  0.030 / 0.030
G12     185.0          27.6                6.9 +/-    1.05      12.8 +/-    1.05  0.080 / 0.110
G13     124.3          19.2                8.4 +/-    1.06      18.9 +/-    1.06  0.070 / 0.120
G15     159.2          17.6                6.4 +/-    2.23      14.9 +/-    2.23  0.220 / 0.280
G20     214.4          61.4                8.1 +/-    1.00       9.1 +/-    1.00  0.170 / 0.190
G21     277.2          23.3                4.4 +/-    1.47       9.0 +/-    1.47  0.040 / 0.050
G25     229.8          47.5                6.7 +/-    2.90       8.7 +/-    2.90  0.050 / 0.050
G29     334.2          62.3                5.1 +/-    0.35       5.7 +/-    0.35  0.080 / 0.110