PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/24-14:13:00
G10     262.6          36.0                4.3 +/-    1.00       6.8 +/-    1.00  0.040 / 0.040
G13     44.0           21.1                3.9 +/-    0.99       8.3 +/-    0.99  0.040 / 0.040
G15     65.2           52.6                5.3 +/-    0.44       6.5 +/-    0.44  0.070 / 0.080
G16     285.1          13.2                2.2 +/-    1.61       5.7 +/-    1.61  0.070 / 0.080
G20     289.9          58.4                5.6 +/-    1.06       6.5 +/-    1.06  0.080 / 0.360
G21     3.7            70.8                3.6 +/-    0.61       3.8 +/-    0.61  0.090 / 0.330
G24     120.1          12.2                8.3 +/-    1.99      22.2 +/-    1.99  0.070 / 0.270
G27     321.4          13.1                1.7 +/-    3.07       4.5 +/-    3.07  0.070 / 0.250
G29     166.0          34.0                6.8 +/-    1.34      11.0 +/-    1.34  0.110 / 0.190