PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-05:12:20
G02     49.2           40.9                3.0 +/-    0.90       4.3 +/-    0.90  0.050 / 0.050
G05     88.1           68.3                5.8 +/-    0.92       6.2 +/-    0.92  0.050 / 0.050
G12     189.3          49.2                7.7 +/-    1.15       9.8 +/-    1.15  0.030 / 0.030
G20     208.2          27.7                7.5 +/-    1.83      13.8 +/-    1.83  0.030 / 0.030
G25     265.6          57.9                5.3 +/-    0.80       6.1 +/-    0.80  0.040 / 0.050
G29     319.1          41.7                5.6 +/-    1.14       8.0 +/-    1.14  0.040 / 0.040