PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-14:57:30
G10     266.4          38.3                6.4 +/-    0.95       9.5 +/-    0.95  0.040 / 0.050
G13     42.1           18.4                3.7 +/-    1.03       8.4 +/-    1.03  0.040 / 0.040
G15     60.8           50.4                5.7 +/-    0.46       7.1 +/-    0.46  0.070 / 0.080
G16     281.3          12.2                5.5 +/-    2.17      14.6 +/-    2.17  0.080 / 0.090
G20     296.6          60.1                4.7 +/-    0.47       5.4 +/-    0.47  0.070 / 0.210
G21     11.8           72.6                5.2 +/-    0.79       5.4 +/-    0.79  0.080 / 0.240
G24     116.8          14.3                9.3 +/-    1.75      23.5 +/-    1.75  0.170 / 0.270
G27     320.0          16.2                1.4 +/-    2.16       3.3 +/-    2.16  0.110 / 0.260
G29     166.7          30.4                7.1 +/-    0.95      12.3 +/-    0.95  0.140 / 0.240