PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-19:43:00
G10     295.4          51.3                8.9 +/-    0.43      11.0 +/-    0.43  0.070 / 0.100
G14     209.8          10.2               -5.4 +/-   21.55     -15.1 +/-   21.55  0.050 / 0.110
G15     47.0           33.0                7.7 +/-    0.57      12.7 +/-    0.57  0.040 / 0.050
G20     348.7          65.4                8.1 +/-    0.77       8.9 +/-    0.77  0.040 / 0.050
G21     93.0           74.2               10.1 +/-    1.06      10.5 +/-    1.06  0.380 / 0.740
G24     95.7           25.6               10.6 +/-    1.06      20.5 +/-    1.06  0.070 / 0.170
G27     303.5          32.5                9.9 +/-    1.15      16.5 +/-    1.15  0.080 / 0.150
G32     209.8          31.0                9.9 +/-    1.74      17.0 +/-    1.74  0.060 / 0.070