PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-20:27:40
G02     66.7           28.1                8.4 +/-    1.14      15.3 +/-    1.14  0.030 / 0.040
G05     48.6           52.2                9.5 +/-    0.32      11.7 +/-    0.32  0.030 / 0.040
G13     119.3          22.0               13.9 +/-    1.10      29.1 +/-    1.10  0.070 / 0.190
G15     161.0          18.9               13.4 +/-    1.72      30.3 +/-    1.72  0.080 / 0.210
G21     279.3          22.6               10.5 +/-    1.78      21.7 +/-    1.78  0.030 / 0.040
G25     222.9          43.6               12.0 +/-    1.04      16.5 +/-    1.04  0.030 / 0.050
G29     333.9          63.3               10.9 +/-    0.67      12.1 +/-    0.67  0.070 / 0.240