PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-18:42:40
G02     67.9           27.9                7.8 +/-    2.59      14.3 +/-    2.59  0.040 / 0.040
G05     47.6           51.9               10.3 +/-    0.72      12.7 +/-    0.72  0.040 / 0.040
G12     180.0          17.2               12.0 +/-    2.19      28.1 +/-    2.19  0.110 / 0.200
G13     117.0          23.6               12.8 +/-    1.94      25.8 +/-    1.94  0.130 / 0.250
G15     161.7          19.9               14.4 +/-    1.12      31.7 +/-    1.12  0.100 / 0.090
G21     281.9          24.9               12.2 +/-    1.97      23.9 +/-    1.97  0.100 / 0.080
G25     219.1          40.8               11.4 +/-    1.90      16.4 +/-    1.90  0.040 / 0.030
G26     318.9          10.8              -11.4 +/-   35.96     -31.3 +/-   35.96  0.030 / 0.030
G29     336.5          66.5               10.8 +/-    0.35      11.6 +/-    0.35  0.130 / 0.190