PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/08-11:57:40
G02     74.2           19.6                5.0 +/-    1.50      11.1 +/-    1.50  0.040 / 0.040
G05     45.6           47.1                3.8 +/-    0.80       5.0 +/-    0.80  0.040 / 0.060
G12     179.2          14.5                5.5 +/-    1.75      13.7 +/-    1.75  0.100 / 0.130
G13     111.5          25.7                9.9 +/-    2.06      19.1 +/-    2.06  0.120 / 0.160
G15     151.0          28.3                6.1 +/-    1.84      11.0 +/-    1.84  0.070 / 0.120
G20     227.2          15.2                5.6 +/-   21.82      14.0 +/-   21.82  0.090 / 0.090
G21     286.4          28.2                5.8 +/-    2.76      10.6 +/-    2.76  0.070 / 0.190
G25     217.5          38.1                7.1 +/-    2.00      10.7 +/-    2.00  0.080 / 0.190
G26     316.5          12.2               -0.3 +/-   23.48      -0.9 +/-   23.48  0.030 / 0.020
G29     340.6          70.5                5.2 +/-    0.69       5.5 +/-    0.69  0.030 / 0.020