PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-13:42:50
G02     327.7          80.8                4.1 +/-    0.73       4.1 +/-    0.73  0.060 / 0.090
G05     168.0          28.3                8.6 +/-    1.40      15.6 +/-    1.40  0.040 / 0.090
G06     40.2           46.5                3.0 +/-    0.61       3.9 +/-    0.61  0.030 / 0.040
G12     316.1          66.2                2.5 +/-    0.47       2.7 +/-    0.47  0.020 / 0.040
G17     84.4           11.7                7.5 +/-    2.49      20.2 +/-    2.49  0.080 / 0.130
G19     72.9           28.0                5.4 +/-    0.58       9.9 +/-    0.58  0.110 / 0.150
G24     232.9          25.7                6.7 +/-    1.77      13.0 +/-    1.77  0.070 / 0.150
G25     317.6          27.1                2.4 +/-    0.84       4.5 +/-    0.84  0.080 / 0.130
G29     285.7          11.3                2.4 +/-   11.98       6.6 +/-   11.98  0.120 / 0.340