PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/27-14:27:50
G10     247.5          26.1                7.9 +/-    2.03      15.0 +/-    2.03  0.070 / 0.110
G13     56.3           30.5                5.6 +/-    0.87       9.7 +/-    0.87  0.100 / 0.120
G15     88.5           56.5                7.5 +/-    0.91       8.7 +/-    0.91  0.030 / 0.040
G20     267.7          51.1                9.0 +/-    1.39      11.2 +/-    1.39  0.040 / 0.040
G21     330.8          57.8                3.9 +/-    3.24       4.5 +/-    3.24  0.030 / 0.060
G26     272.1          16.7                7.4 +/-    1.88      17.6 +/-    1.88  0.030 / 0.060
G29     162.6          55.6               10.3 +/-    0.92      12.1 +/-    0.92  0.050 / 0.130