PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-21:42:20
G02     43.2           46.3                9.1 +/-    0.88      12.1 +/-    0.88  0.040 / 0.050
G05     106.2          69.0               11.5 +/-    0.45      12.2 +/-    0.45  0.050 / 0.060
G12     191.5          55.8               12.5 +/-    1.78      14.7 +/-    1.78  0.060 / 0.080
G25     275.3          58.1               10.8 +/-    0.69      12.5 +/-    0.69  0.060 / 0.060
G29     316.5          38.7                9.8 +/-    1.05      14.6 +/-    1.05  0.050 / 0.050