PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/16-15:28:10
G02     48.6           42.5                7.8 +/-    0.57      10.9 +/-    0.57  0.040 / 0.050
G12     185.6          43.9                8.8 +/-    1.51      12.1 +/-    1.51  0.040 / 0.050
G21     262.7          10.8               -3.4 +/-   14.30      -9.4 +/-   14.30  0.150 / 0.460
G25     250.6          58.3                7.9 +/-    0.86       9.1 +/-    0.86  0.140 / 0.490
G29     320.9          43.9                7.4 +/-    0.99      10.2 +/-    0.99  0.060 / 0.060