PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-03:57:40
G02     34.6           53.8                4.6 +/-    1.00       5.6 +/-    1.00  0.060 / 0.160
G05     135.5          63.0                6.0 +/-    0.46       6.7 +/-    0.46  0.040 / 0.060
G06     52.5           19.2                2.6 +/-    1.72       5.8 +/-    1.72  0.030 / 0.030
G12     203.9          69.2                6.0 +/-    0.49       6.4 +/-    0.49  0.030 / 0.030
G25     293.9          55.4                4.1 +/-    4.85       4.8 +/-    4.85  0.030 / 0.040
G29     310.8          33.7                3.0 +/-    1.18       4.9 +/-    1.18  0.030 / 0.030