PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-14:42:40
G05     52.6           10.3                5.5 +/-    5.06      15.2 +/-    5.06  0.460 / 0.420
G10     244.0          22.9                7.9 +/-    1.70      16.2 +/-    1.70  0.120 / 0.430
G13     60.8           32.3                7.3 +/-    1.54      12.2 +/-    1.54  0.200 / 0.660
G15     97.7           56.7                9.0 +/-    1.41      10.5 +/-    1.41  0.330 / 0.600
G16     302.8          15.7                4.4 +/-    6.69      10.9 +/-    6.69  0.040 / 0.030
G20     262.0          48.1                9.0 +/-    3.06      11.6 +/-    3.06  0.040 / 0.030
G21     325.8          54.7                8.4 +/-    0.92      10.1 +/-    0.92  0.060 / 0.070
G26     276.2          18.0                7.8 +/-    0.90      18.0 +/-    0.90  0.050 / 0.070
G29     160.8          60.5               11.1 +/-    0.73      12.5 +/-    0.73  0.070 / 0.110