PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-13:57:40
G10     262.3          37.1                6.7 +/-    1.17      10.2 +/-    1.17  0.160 / 0.290
G13     43.9           20.6                4.1 +/-    1.62       8.8 +/-    1.62  0.130 / 0.320
G15     61.6           49.0                5.8 +/-    0.34       7.5 +/-    0.34  0.150 / 0.350
G16     283.0          14.2                3.4 +/-    1.79       8.6 +/-    1.79  0.160 / 0.390
G20     294.1          60.4                6.1 +/-    0.71       6.9 +/-    0.71  0.040 / 0.060
G21     355.7          68.9                4.2 +/-    0.62       4.4 +/-    0.62  0.040 / 0.050
G24     126.2          11.2               -0.9 +/-   36.47      -2.6 +/-   36.47  0.160 / 0.420
G26     257.9          10.1                2.7 +/-    2.08       7.5 +/-    2.08  0.110 / 0.380
G27     320.6          15.0                1.9 +/-    1.50       4.7 +/-    1.50  0.040 / 0.070
G29     166.6          37.7                7.4 +/-    1.31      11.2 +/-    1.31  0.040 / 0.070