PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-17:58:00
G01     314.2          28.2                6.5 +/-    0.96      11.9 +/-    0.96  0.190 / 0.270
G10     93.7           45.4                8.4 +/-    1.01      11.2 +/-    1.01  0.180 / 0.260
G11     298.0          23.4                6.5 +/-    2.18      13.2 +/-    2.18  0.050 / 0.040
G14     313.3          70.2                6.5 +/-    0.81       6.9 +/-    0.81  0.050 / 0.040
G20     114.0          19.0                7.8 +/-    1.63      17.6 +/-    1.63  0.120 / 0.240
G22     305.5          16.2                7.0 +/-    2.25      16.9 +/-    2.25  0.110 / 0.180
G25     92.9           12.0                9.5 +/-    1.27      25.4 +/-    1.27  0.040 / 0.050
G31     173.7          51.5                8.7 +/-    0.84      10.8 +/-    0.84  0.040 / 0.050
G32     25.3           59.5                6.9 +/-    0.97       7.9 +/-    0.97  0.050 / 0.040