PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/27-13:42:40
G02     73.5           21.9                2.6 +/-    1.48       5.5 +/-    1.48  0.110 / 0.340
G05     45.6           46.8                3.5 +/-    0.36       4.6 +/-    0.36  0.170 / 0.320
G12     180.9          15.1                4.2 +/-    2.57      10.4 +/-    2.57  0.080 / 0.090
G13     112.1          26.6                8.1 +/-    1.56      15.4 +/-    1.56  0.090 / 0.110
G15     155.6          26.2                5.6 +/-    1.57      10.7 +/-    1.57  0.030 / 0.050
G20     227.2          12.5                3.0 +/-    2.15       7.9 +/-    2.15  0.030 / 0.050
G21     287.4          30.0                4.6 +/-    2.37       8.1 +/-    2.37  0.110 / 0.150
G25     211.5          34.8                4.9 +/-    2.10       7.8 +/-    2.10  0.070 / 0.130
G26     317.1          11.8                1.6 +/-    3.70       4.2 +/-    3.70  0.030 / 0.060
G29     344.2          73.4                4.3 +/-    0.61       4.4 +/-    0.61  0.040 / 0.020