PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/13-13:57:40
G02     58.0           34.3                3.4 +/-    0.66       5.4 +/-    0.66  0.040 / 0.060
G05     62.5           64.9                4.2 +/-    0.60       4.6 +/-    0.60  0.040 / 0.050
G12     184.4          33.4                5.0 +/-    1.07       8.2 +/-    1.07  0.120 / 0.240
G13     128.4          14.5                7.3 +/-    3.71      18.5 +/-    3.71  0.140 / 0.240
G15     166.3          10.4               -6.7 +/-   18.01     -18.6 +/-   18.01  0.110 / 0.090
G21     271.4          18.2                4.9 +/-    1.70      11.2 +/-    1.70  0.040 / 0.100
G25     230.2          51.7                4.8 +/-    1.47       6.0 +/-    1.47  0.030 / 0.030
G29     328.4          54.1                0.5 +/-    1.07       0.6 +/-    1.07  0.020 / 0.020