PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-15:57:40
G02     238.1          72.4                8.8 +/-    0.85       9.2 +/-    0.85  0.050 / 0.060
G05     172.7          14.7                9.9 +/-    2.14      24.9 +/-    2.14  0.040 / 0.060
G06     40.7           58.4                9.7 +/-    1.07      11.2 +/-    1.07  0.140 / 0.660
G12     321.2          50.6                8.7 +/-    0.85      10.9 +/-    0.85  0.130 / 0.450
G17     68.0           25.6                9.3 +/-    0.79      17.9 +/-    0.79  0.030 / 0.040
G19     57.0           37.6                8.7 +/-    0.40      13.2 +/-    0.40  0.040 / 0.030
G24     247.1          35.1               10.5 +/-    1.06      16.6 +/-    1.06  0.090 / 0.100
G25     316.0          10.5              -16.1 +/-   25.54     -44.3 +/-   25.54  0.100 / 0.120