PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/29-19:27:50
G07     29.1           68.0               13.3 +/-    1.17      14.2 +/-    1.17  0.030 / 0.040
G08     63.1           47.4               11.8 +/-    1.64      15.4 +/-    1.64  0.030 / 0.030
G09     180.7          51.7               16.1 +/-    1.08      19.9 +/-    1.08  0.040 / 0.060
G11     129.4          27.8               14.1 +/-    2.41      25.8 +/-    2.41  0.040 / 0.040
G18     112.7          9.9                -2.8 +/-   30.41      -7.8 +/-   30.41  0.150 / 0.210
G23     160.3          21.2               14.0 +/-    1.38      30.0 +/-    1.38  0.120 / 0.160
G27     41.7           19.5                9.6 +/-    1.90      21.3 +/-    1.90  0.060 / 0.120
G28     254.9          41.3               13.8 +/-    2.46      19.7 +/-    2.46  0.070 / 0.120
G30     320.0          50.8               12.5 +/-    0.67      15.7 +/-    0.67  0.050 / 0.060