PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-18:12:30
G07     29.4           67.9               12.2 +/-    0.66      13.1 +/-    0.66  0.040 / 0.030
G08     64.4           48.1               12.1 +/-    1.90      15.6 +/-    1.90  0.030 / 0.030
G09     181.1          52.6               14.4 +/-    0.48      17.6 +/-    0.48  0.060 / 0.110
G11     130.1          27.4               11.7 +/-    1.32      21.7 +/-    1.32  0.070 / 0.120
G18     113.5          9.5               -10.4 +/-   11.56     -29.4 +/-   11.56  0.140 / 0.210
G23     160.0          21.2               12.8 +/-    1.51      27.4 +/-    1.51  0.170 / 0.100
G27     41.9           19.8               10.2 +/-    2.16      22.5 +/-    2.16  0.040 / 0.050
G28     254.1          40.6               14.1 +/-    2.38      20.4 +/-    2.38  0.040 / 0.050
G30     320.0          50.8               12.1 +/-    0.81      15.1 +/-    0.81  0.060 / 0.070