PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-10:13:00
G10     298.7          52.1                4.2 +/-    1.90       5.1 +/-    1.90  0.190 / 0.640
G14     211.1          10.5               -6.9 +/-   12.33     -19.2 +/-   12.33  0.080 / 0.090
G15     45.8           26.0                3.8 +/-    3.24       7.2 +/-    3.24  0.080 / 0.090
G20     66.0           30.3                4.5 +/-    0.86       7.8 +/-    0.86  0.080 / 0.110
G21     101.7          72.5                5.4 +/-    0.96       5.7 +/-    0.96  0.080 / 0.110
G24     96.7           27.0                5.1 +/-    2.13       9.6 +/-    2.13  0.040 / 0.040
G27     298.3          35.2                5.9 +/-    2.06       9.4 +/-    2.06  0.040 / 0.030
G32     211.0          34.4                6.3 +/-    1.84      10.1 +/-    1.84  0.100 / 0.050