PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-05:43:10
G10     277.4          43.6                6.2 +/-    1.24       8.5 +/-    1.24  0.050 / 0.030
G13     38.6           11.2                3.7 +/-    1.87      10.0 +/-    1.87  0.060 / 0.050
G15     51.5           41.4                3.5 +/-    0.64       5.0 +/-    0.64  0.480 / 0.430
G20     7.5            65.5                4.6 +/-    0.37       5.0 +/-    0.37  0.510 / 0.470
G21     30.7           76.4                5.8 +/-    1.12       6.0 +/-    1.12  0.170 / 0.140
G24     112.1          19.4                5.6 +/-    1.11      12.5 +/-    1.11  0.110 / 0.120
G27     313.3          26.0                3.5 +/-    1.86       6.7 +/-    1.86  0.030 / 0.030
G29     168.9          22.2                4.2 +/-    1.87       8.9 +/-    1.87  0.030 / 0.030
G32     205.5          19.2                4.7 +/-    4.24      10.4 +/-    4.24  0.110 / 0.160