PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-20:58:10
G02     73.4           22.8                9.6 +/-    2.83      19.7 +/-    2.83  0.040 / 0.050
G05     45.3           44.1                9.0 +/-    1.21      12.3 +/-    1.21  0.040 / 0.060
G12     178.2          11.2               12.5 +/-    5.58      33.9 +/-    5.58  0.080 / 0.160
G13     111.5          27.2               11.9 +/-    1.74      22.2 +/-    1.74  0.100 / 0.150
G15     156.3          26.1               14.3 +/-    2.81      27.2 +/-    2.81  0.100 / 0.110
G20     227.1          -13.1              13.3 +/-    3.72      34.6 +/-    3.72  0.090 / 0.120
G21     286.2          27.6                9.9 +/-    1.71      18.3 +/-    1.71  0.230 / 0.300
G25     215.9          36.2               10.9 +/-    1.73      17.0 +/-    1.73  0.180 / 0.330
G26     314.1          14.7                8.6 +/-    1.96      21.4 +/-    1.96  0.030 / 0.030
G29     340.0          72.0                9.4 +/-    0.44       9.8 +/-    0.44  0.030 / 0.030