PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/14-13:58:00
G10     264.3          38.3                5.2 +/-    0.68       7.8 +/-    0.68  0.140 / 0.250
G13     42.9           19.2                3.7 +/-    1.43       8.3 +/-    1.43  0.130 / 0.210
G15     59.5           47.7                3.8 +/-    0.96       4.9 +/-    0.96  0.080 / 0.390
G16     281.2          13.7                2.6 +/-    1.56       6.6 +/-    1.56  0.080 / 0.390
G20     297.8          61.2                4.4 +/-    0.71       4.9 +/-    0.71  0.140 / 0.360
G21     359.6          70.1                4.8 +/-    0.97       5.1 +/-    0.97  0.160 / 0.410
G24     124.7          12.3                5.9 +/-    2.97      15.6 +/-    2.97  0.050 / 0.050
G27     320.0          16.5                0.9 +/-    2.03       2.3 +/-    2.03  0.050 / 0.050
G29     166.9          35.7                6.2 +/-    1.37       9.7 +/-    1.37  0.040 / 0.090