PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/20-17:57:40
G01     307.4          34.9                7.5 +/-    1.58      12.0 +/-    1.58  0.150 / 0.150
G10     104.3          39.1                8.4 +/-    0.91      12.4 +/-    0.91  0.130 / 0.140
G11     288.5          25.2                6.6 +/-    1.10      12.9 +/-    1.10  0.040 / 0.050
G14     340.9          68.8                6.6 +/-    0.63       7.1 +/-    0.63  0.040 / 0.050
G20     120.2          12.1                9.2 +/-    1.21      24.5 +/-    1.21  0.090 / 0.240
G22     309.4          23.5                6.7 +/-    0.92      13.5 +/-    0.92  0.080 / 0.190
G25     84.0           15.4                9.0 +/-    3.58      22.3 +/-    3.58  0.050 / 0.060
G31     169.2          61.8                8.5 +/-    0.55       9.5 +/-    0.55  0.060 / 0.050
G32     35.9           52.5                7.8 +/-    0.97       9.5 +/-    0.97  0.030 / 0.040