PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-14:12:40
G10     266.5          38.4                4.0 +/-    1.10       6.0 +/-    1.10  0.040 / 0.040
G13     42.1           18.4                4.4 +/-    3.45      10.1 +/-    3.45  0.040 / 0.040
G15     60.5           50.0                6.0 +/-    0.89       7.5 +/-    0.89  0.080 / 0.060
G16     281.7          12.2                3.8 +/-    1.58      10.1 +/-    1.58  0.090 / 0.070
G20     296.7          60.1                3.0 +/-    1.35       3.4 +/-    1.35  0.360 / 0.550
G21     13.8           72.8                4.6 +/-    1.04       4.8 +/-    1.04  0.300 / 0.560
G24     117.1          14.3                7.8 +/-    2.10      19.7 +/-    2.10  0.140 / 0.280
G27     320.1          16.0                3.2 +/-    1.94       7.7 +/-    1.94  0.130 / 0.360
G29     166.5          30.1                8.0 +/-    1.49      14.0 +/-    1.49  0.450 / 0.350