PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-19:28:10
G10     289.1          49.0                9.6 +/-    1.14      12.3 +/-    1.14  0.070 / 0.110
G15     48.3           36.9                8.0 +/-    0.56      12.2 +/-    0.56  0.070 / 0.110
G20     337.8          65.3                8.5 +/-    0.97       9.3 +/-    0.97  0.040 / 0.050
G21     76.1           76.1                9.5 +/-    0.64       9.7 +/-    0.64  0.040 / 0.050
G24     100.3          23.8               10.0 +/-    1.56      20.0 +/-    1.56  0.070 / 0.210
G27     307.7          30.1                9.3 +/-    1.89      16.2 +/-    1.89  0.070 / 0.160
G29     168.3          13.1               10.5 +/-    3.31      27.3 +/-    3.31  0.050 / 0.070
G32     208.2          26.6               10.0 +/-    1.46      18.8 +/-    1.46  0.060 / 0.070