PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-21:13:10
G02     58.5           34.3                7.2 +/-    0.95      11.6 +/-    0.95  0.030 / 0.040
G05     58.4           61.4                9.6 +/-    0.85      10.8 +/-    0.85  0.020 / 0.040
G12     182.1          29.9               13.3 +/-    1.08      23.3 +/-    1.08  0.070 / 0.150
G13     128.0          15.1               14.6 +/-    1.50      36.3 +/-    1.50  0.060 / 0.100
G15     166.0          10.8               -1.5 +/-   33.71      -4.2 +/-   33.71  0.040 / 0.060
G21     270.8          16.3               12.3 +/-    2.61      29.7 +/-    2.61  0.070 / 0.070
G25     236.0          51.9               11.4 +/-    1.42      14.0 +/-    1.42  0.050 / 0.100
G29     327.3          53.1                6.8 +/-    1.43       8.2 +/-    1.43  0.070 / 0.090