PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-07:13:00
G02     201.5          32.5                6.9 +/-    1.47      11.4 +/-    1.47  0.130 / 0.080
G06     173.1          61.3                7.1 +/-    0.44       7.9 +/-    0.44  0.090 / 0.100
G12     305.2          11.1               -2.0 +/-   14.99      -5.6 +/-   14.99  0.110 / 0.140
G17     33.1           51.6                4.3 +/-    1.15       5.3 +/-    1.15  0.210 / 0.220
G19     356.0          66.9                3.4 +/-    0.49       3.6 +/-    0.49  0.040 / 0.030
G24     302.9          35.2                4.5 +/-    1.31       7.0 +/-    1.31  0.060 / 0.040
G28     99.4           32.9                5.7 +/-    1.22       9.3 +/-    1.22  0.040 / 0.020