PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/09-14:13:10
G10     262.1          36.9                6.6 +/-    2.12      10.2 +/-    2.12  0.090 / 0.220
G13     44.0           20.7                4.9 +/-    1.79      10.7 +/-    1.79  0.130 / 0.240
G15     61.9           49.3                6.1 +/-    0.40       7.8 +/-    0.40  0.070 / 0.060
G16     283.1          14.2                4.1 +/-    1.49      10.5 +/-    1.49  0.070 / 0.060
G20     293.6          60.3                7.8 +/-    1.04       8.8 +/-    1.04  0.190 / 0.330
G21     355.0          68.7                5.2 +/-    1.02       5.5 +/-    1.02  0.140 / 0.320
G24     126.3          11.1               -1.3 +/-   32.35      -3.4 +/-   32.35  0.170 / 0.360
G26     258.0          10.2                4.2 +/-    2.44      11.7 +/-    2.44  0.130 / 0.350
G27     320.7          14.8                2.5 +/-    2.62       6.2 +/-    2.62  0.050 / 0.090
G29     166.6          37.9                9.6 +/-    1.69      14.4 +/-    1.69  0.040 / 0.070