PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-22:27:50
G05     48.0           18.5                6.4 +/-    2.16      14.5 +/-    2.16  0.050 / 0.070
G10     234.6          12.3               -1.0 +/-   36.96      -2.5 +/-   36.96  0.040 / 0.080
G13     77.4           35.5               10.4 +/-    0.92      16.4 +/-    0.92  0.090 / 0.100
G15     126.9          51.1               10.0 +/-    0.77      12.5 +/-    0.77  0.090 / 0.100
G16     316.3          11.3                7.4 +/-   15.58      20.1 +/-   15.58  0.180 / 0.350
G20     246.3          35.0               10.2 +/-    2.16      16.3 +/-    2.16  0.170 / 0.340
G21     311.1          44.9                8.3 +/-    0.78      11.2 +/-    0.78  0.030 / 0.040
G25     201.0          13.4               11.4 +/-    2.18      29.5 +/-    2.18  0.030 / 0.050
G26     290.1          20.1                6.3 +/-    1.45      13.8 +/-    1.45  0.310 / 0.850
G29     150.0          74.2                9.9 +/-    0.38      10.3 +/-    0.38  0.310 / 0.630