PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-17:57:50
G01     309.4          31.3                7.5 +/-    2.13      12.8 +/-    2.13  0.130 / 0.120
G10     102.9          42.5                8.8 +/-    0.73      12.3 +/-    0.73  0.080 / 0.100
G11     286.8          27.4                8.2 +/-    0.82      15.2 +/-    0.82  0.090 / 0.240
G14     348.5          68.2                5.8 +/-    0.29       6.2 +/-    0.29  0.070 / 0.150
G18     116.0          14.4                8.9 +/-    2.81      22.6 +/-    2.81  0.080 / 0.130
G22     308.7          23.9                5.8 +/-    0.83      11.6 +/-    0.83  0.080 / 0.140
G25     85.2           15.8                9.1 +/-    1.19      22.2 +/-    1.19  0.030 / 0.030
G31     169.7          61.7                8.3 +/-    0.50       9.3 +/-    0.50  0.050 / 0.030
G32     33.1           54.4                6.7 +/-    1.37       8.1 +/-    1.37  0.040 / 0.030