PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-21:27:30
G02     39.0           49.9                8.6 +/-    0.28      10.9 +/-    0.28  0.040 / 0.060
G05     120.9          67.4                9.8 +/-    0.48      10.5 +/-    0.48  0.030 / 0.060
G06     57.5           10.5                7.9 +/-    1.72      21.8 +/-    1.72  0.050 / 0.060
G12     194.5          61.3               10.6 +/-    0.86      11.9 +/-    0.86  0.050 / 0.060
G25     285.0          56.8                9.2 +/-    1.05      10.8 +/-    1.05  0.030 / 0.050
G29     313.1          34.8                9.2 +/-    1.06      14.7 +/-    1.06  0.040 / 0.050