PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-10:27:40
G02     245.5          78.1                5.3 +/-    0.32       5.4 +/-    0.32  0.170 / 0.220
G05     172.1          16.4                4.7 +/-    1.63      11.3 +/-    1.63  0.170 / 0.250
G06     39.6           63.0                4.6 +/-    0.50       5.1 +/-    0.50  0.070 / 0.120
G12     321.2          51.2                4.5 +/-    0.42       5.5 +/-    0.42  0.080 / 0.110
G17     72.5           20.8                4.5 +/-    0.93       9.6 +/-    0.93  0.030 / 0.040
G19     59.2           37.0                3.9 +/-    1.16       5.9 +/-    1.16  0.040 / 0.030
G24     246.1          34.6                6.9 +/-    1.67      11.0 +/-    1.67  0.050 / 0.020
G25     316.9          13.4                2.5 +/-    5.37       6.3 +/-    5.37  0.050 / 0.030