PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/14-10:27:30
G07     54.5           68.5                2.6 +/-    0.45       2.8 +/-    0.45  0.080 / 0.090
G08     55.0           45.1                1.2 +/-    0.86       1.6 +/-    0.86  0.070 / 0.100
G09     178.3          38.8                5.2 +/-    1.28       7.7 +/-    1.28  0.060 / 0.120
G11     121.2          35.0                4.8 +/-    0.86       7.6 +/-    0.86  0.060 / 0.110
G13     321.1          11.1               -4.6 +/-   16.12     -12.6 +/-   16.12  0.030 / 0.030
G18     104.8          15.6                3.2 +/-    1.33       7.8 +/-    1.33  0.030 / 0.030
G28     266.6          46.4                4.3 +/-    1.17       5.6 +/-    1.17  0.110 / 0.430
G30     330.1          58.9                2.3 +/-    0.84       2.6 +/-    0.84  0.120 / 0.430