PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-20:57:50
G02     56.3           35.5                9.0 +/-    1.36      14.1 +/-    1.36  0.150 / 0.450
G05     62.5           63.4                8.5 +/-    0.82       9.4 +/-    0.82  0.140 / 0.380
G12     185.8          37.3               10.0 +/-    1.45      15.3 +/-    1.45  0.240 / 0.310
G13     129.2          12.9               11.9 +/-    2.51      31.0 +/-    2.51  0.210 / 0.330
G15     165.0          10.3               -4.3 +/-   22.09     -11.9 +/-   22.09  0.050 / 0.060
G21     269.0          14.7                9.8 +/-    2.71      24.6 +/-    2.71  0.050 / 0.070
G25     242.8          54.1                9.8 +/-    2.63      11.8 +/-    2.63  0.110 / 0.290
G29     327.3          52.3               10.1 +/-    0.92      12.4 +/-    0.92  0.110 / 0.360