PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-01:42:50
G02     213.3          58.0                7.7 +/-    0.97       8.9 +/-    0.97  0.080 / 0.060
G06     85.9           81.1                6.8 +/-    0.48       6.9 +/-    0.48  0.040 / 0.050
G12     316.4          30.6                5.8 +/-    1.10      10.0 +/-    1.10  0.050 / 0.090
G17     55.5           32.9                5.0 +/-    2.98       8.3 +/-    2.98  0.080 / 0.110
G19     34.8           51.5                6.8 +/-    1.58       8.4 +/-    1.58  0.120 / 0.210
G24     267.1          42.6                6.5 +/-    2.63       9.1 +/-    2.63  0.100 / 0.210
G28     119.2          19.4                6.0 +/-    1.69      13.4 +/-    1.69  0.040 / 0.050