PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-23:42:50
G05     47.6           20.1                9.5 +/-    3.22      21.0 +/-    3.22  0.290 / 0.220
G13     81.0           36.4               12.0 +/-    1.07      18.6 +/-    1.07  0.310 / 0.180
G15     133.7          49.0               13.0 +/-    0.56      16.6 +/-    0.56  0.060 / 0.070
G16     316.4          11.8                8.1 +/-   12.79      21.7 +/-   12.79  0.060 / 0.080
G20     241.2          18.9               12.6 +/-    1.23      28.5 +/-    1.23  0.080 / 0.100
G21     308.6          43.6               11.8 +/-    0.83      16.2 +/-    0.83  0.070 / 0.080
G25     201.2          14.0               17.1 +/-    2.14      43.6 +/-    2.14  0.210 / 0.350
G26     290.1          21.1               11.9 +/-    1.96      25.4 +/-    1.96  0.180 / 0.410
G29     152.0          78.3               12.4 +/-    0.72      12.6 +/-    0.72  0.440 / 0.560