PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-16:27:30
G10     262.5          35.8                7.8 +/-    1.59      12.1 +/-    1.59  0.090 / 0.140
G13     44.0           21.2                2.7 +/-    1.45       5.7 +/-    1.45  0.090 / 0.180
G15     66.5           53.7                7.3 +/-    0.45       8.9 +/-    0.45  0.120 / 0.360
G16     284.1          13.4                6.6 +/-    1.70      17.1 +/-    1.70  0.150 / 0.360
G20     289.7          58.3                9.1 +/-    0.75      10.5 +/-    0.75  0.100 / 0.340
G21     359.0          70.1                8.8 +/-    0.55       9.3 +/-    0.55  0.100 / 0.370
G24     120.1          12.2                9.4 +/-    2.30      25.0 +/-    2.30  0.050 / 0.040
G27     321.2          13.6                6.2 +/-    2.44      16.0 +/-    2.44  0.040 / 0.040
G29     166.6          35.1                9.6 +/-    0.70      15.2 +/-    0.70  0.060 / 0.060