PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-14:28:00
G10     260.1          34.4                2.5 +/-    1.92       4.0 +/-    1.92  0.040 / 0.050
G13     45.4           22.9                2.8 +/-    0.57       5.8 +/-    0.57  0.040 / 0.050
G15     68.9           54.2                4.8 +/-    0.53       5.8 +/-    0.53  0.170 / 0.300
G16     287.3          13.8                2.8 +/-    2.01       7.3 +/-    2.01  0.130 / 0.280
G20     285.7          57.1                4.7 +/-    0.99       5.5 +/-    0.99  0.060 / 0.210
G21     357.4          69.2                3.2 +/-    0.67       3.4 +/-    0.67  0.070 / 0.210
G24     122.0          10.8                1.3 +/-   34.85       3.5 +/-   34.85  0.070 / 0.120
G26     261.5          11.0                2.0 +/-    1.67       5.6 +/-    1.67  0.070 / 0.090
G27     322.0          11.2               -5.6 +/-   26.97     -15.2 +/-   26.97  0.130 / 0.370
G29     165.7          36.8                3.5 +/-    1.10       5.3 +/-    1.10  0.160 / 0.390