PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/05-06:57:50
G02     53.2           37.3                2.5 +/-    1.14       3.8 +/-    1.14  0.030 / 0.030
G05     75.1           66.6                4.7 +/-    0.59       5.0 +/-    0.59  0.030 / 0.030
G12     188.3          44.1                6.8 +/-    1.62       9.3 +/-    1.62  0.040 / 0.050
G20     206.4          43.1                7.2 +/-    0.86      10.0 +/-    0.86  0.040 / 0.060
G21     264.2          12.6                2.5 +/-    7.43       6.5 +/-    7.43  0.190 / 0.430
G25     255.5          56.9                6.1 +/-    1.86       7.1 +/-    1.86  0.210 / 0.320
G29     322.7          46.5                3.6 +/-    0.66       4.8 +/-    0.66  0.050 / 0.070