PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/06-13:42:50
G10     244.5          23.5                5.8 +/-    0.50      11.7 +/-    0.50  0.140 / 0.410
G13     60.1           32.1                5.4 +/-    1.70       9.1 +/-    1.70  0.280 / 0.420
G15     95.3           56.5                6.9 +/-    0.61       8.1 +/-    0.61  0.050 / 0.030
G16     302.2          15.7                4.2 +/-    1.87      10.2 +/-    1.87  0.030 / 0.030
G20     263.1          48.9                7.5 +/-    3.91       9.5 +/-    3.91  0.040 / 0.050
G21     327.0          55.5                4.1 +/-    0.52       4.9 +/-    0.52  0.030 / 0.050
G26     275.8          17.8                6.1 +/-    1.95      14.1 +/-    1.95  0.070 / 0.100
G29     161.1          59.8                8.8 +/-    0.41      10.0 +/-    0.41  0.070 / 0.120