PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/23-00:27:50
G01     293.5          39.4                7.8 +/-    0.95      11.4 +/-    0.95  0.070 / 0.100
G03     310.9          13.8                8.1 +/-    2.21      20.7 +/-    2.21  0.080 / 0.110
G10     117.8          31.2                9.7 +/-    0.64      16.5 +/-    0.64  0.030 / 0.030
G11     266.6          27.3                8.4 +/-    1.21      15.6 +/-    1.21  0.020 / 0.030
G14     22.8           59.3                7.7 +/-    0.49       8.8 +/-    0.49  0.060 / 0.110
G22     313.1          35.5                7.9 +/-    1.21      12.4 +/-    1.21  0.060 / 0.100
G25     67.4           18.3                6.3 +/-    0.79      14.4 +/-    0.79  0.060 / 0.090
G31     159.4          75.7                9.4 +/-    1.54       9.7 +/-    1.54  0.050 / 0.090
G32     46.6           45.8                6.0 +/-    0.35       8.0 +/-    0.35  0.030 / 0.050