PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-18:57:40
G10     248.4          25.1               24.4 +/-    1.42      47.4 +/-    1.42  0.040 / 0.040
G13     55.9           31.0               22.3 +/-    1.96      38.3 +/-    1.96  0.050 / 0.050
G15     99.9           59.5               24.5 +/-    0.89      28.0 +/-    0.89  0.130 / 0.310
G16     298.0          15.6               19.3 +/-    1.11      47.4 +/-    1.11  0.110 / 0.330
G20     266.3          49.1               23.9 +/-    4.06      30.5 +/-    4.06  0.050 / 0.120
G21     331.5          58.7               22.7 +/-    0.64      26.1 +/-    0.64  0.060 / 0.170
G26     270.7          16.5               19.4 +/-   18.99      46.6 +/-   18.99  0.030 / 0.030
G29     163.7          53.2               26.3 +/-    0.58      32.0 +/-    0.58  0.030 / 0.030