PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-21:12:40
G02     31.3           56.4                9.2 +/-    1.25      10.8 +/-    1.25  0.040 / 0.050
G05     139.6          61.5               12.5 +/-    0.46      14.0 +/-    0.46  0.070 / 0.070
G06     52.7           16.7                8.2 +/-    1.45      19.7 +/-    1.45  0.050 / 0.050
G12     204.5          70.5               12.3 +/-    0.43      13.0 +/-    0.43  0.040 / 0.060
G25     298.9          52.3               10.1 +/-    2.25      12.4 +/-    2.25  0.030 / 0.030
G29     307.1          28.4                9.8 +/-    1.21      17.8 +/-    1.21  0.030 / 0.030