PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/21-17:57:50
G10     273.8          43.3                9.7 +/-    1.17      13.4 +/-    1.17  0.120 / 0.130
G13     39.2           12.9                5.3 +/-    2.67      13.8 +/-    2.67  0.090 / 0.120
G15     53.3           43.1                7.5 +/-    1.47      10.4 +/-    1.47  0.120 / 0.330
G16     273.2          10.8               10.4 +/-    2.94      28.6 +/-    2.94  0.110 / 0.470
G20     312.9          63.4                9.7 +/-    0.57      10.7 +/-    0.57  0.040 / 0.040
G21     17.6           74.5                9.4 +/-    0.62       9.7 +/-    0.62  0.050 / 0.040
G24     117.8          17.2               11.3 +/-    1.82      26.6 +/-    1.82  0.130 / 0.210
G27     316.2          22.9                8.7 +/-    1.12      17.8 +/-    1.12  0.110 / 0.180
G29     168.0          26.6               10.2 +/-    0.82      19.1 +/-    0.82  0.130 / 0.450
G32     204.5          14.9               14.5 +/-    2.62      36.1 +/-    2.62  0.090 / 0.210