PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-14:27:40
G05     48.9           17.1                3.7 +/-    1.96       8.7 +/-    1.96  0.100 / 0.120
G10     236.2          11.7               -4.3 +/-   28.67     -11.6 +/-   28.67  0.090 / 0.280
G13     77.1           37.1                5.5 +/-    0.66       8.3 +/-    0.66  0.090 / 0.190
G15     121.6          52.3                7.1 +/-    0.52       8.7 +/-    0.52  0.090 / 0.170
G18     246.3          44.1                4.6 +/-    2.63       6.3 +/-    2.63  0.040 / 0.030
G20     22.9           69.1                5.7 +/-    0.70       6.1 +/-    0.70  0.040 / 0.030
G21     317.8          51.3                4.7 +/-    0.88       5.9 +/-    0.88  0.070 / 0.070
G25     199.3          10.6                5.0 +/-    3.86      13.8 +/-    3.86  0.060 / 0.070
G26     289.8          19.7                3.4 +/-    1.55       7.5 +/-    1.55  0.150 / 0.240
G29     153.0          67.8                7.4 +/-    0.40       8.0 +/-    0.40  0.400 / 0.460