PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-11:12:30
G02     16.6           68.6                1.1 +/-    1.20       1.2 +/-    1.20  0.030 / 0.070
G05     158.8          44.9                6.9 +/-    0.96       9.2 +/-    0.96  0.040 / 0.050
G06     44.0           34.9                1.4 +/-    0.61       2.2 +/-    0.61  0.170 / 0.240
G12     275.5          78.4               -0.1 +/-    0.70      -0.1 +/-    0.70  0.130 / 0.320
G19     86.3           19.3                4.2 +/-    1.02       9.5 +/-    1.02  0.030 / 0.020
G24     221.1          15.0                4.3 +/-    1.13      10.7 +/-    1.13  0.030 / 0.030
G25     313.5          39.8                1.7 +/-    2.13       2.5 +/-    2.13  0.040 / 0.070
G29     296.6          19.4                3.8 +/-    1.09       8.6 +/-    1.09  0.030 / 0.050