PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-09:28:10
G07     51.1           68.9                5.0 +/-    0.44       5.3 +/-    0.44  0.030 / 0.040
G08     55.4           45.0                3.0 +/-    0.40       4.0 +/-    0.40  0.030 / 0.030
G09     178.0          39.3                8.6 +/-    1.09      12.6 +/-    1.09  0.050 / 0.120
G11     122.4          34.5               -0.9 +/-    0.90      -1.4 +/-    0.90  0.050 / 0.110
G13     321.3          10.5               -8.8 +/-    7.36     -24.2 +/-    7.36  0.110 / 0.480
G18     105.5          15.3                4.8 +/-    1.90      11.9 +/-    1.90  0.120 / 0.240
G28     265.4          45.7                4.5 +/-    1.77       6.0 +/-    1.77  0.090 / 0.210
G30     328.5          57.8                3.6 +/-    0.44       4.1 +/-    0.44  0.050 / 0.080