PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-06:13:10
G07     335.9          59.4                4.9 +/-    0.48       5.6 +/-    0.48  0.030 / 0.040
G08     102.0          52.1                6.3 +/-    0.31       7.8 +/-    0.31  0.030 / 0.050
G09     186.5          72.6                5.0 +/-    0.59       5.2 +/-    0.59  0.070 / 0.100
G11     147.0          13.8                5.6 +/-    1.43      14.4 +/-    1.43  0.090 / 0.110
G23     155.2          40.5                7.4 +/-    1.16      10.7 +/-    1.16  0.030 / 0.030
G27     55.3           31.7                3.4 +/-    1.71       5.8 +/-    1.71  0.030 / 0.030
G28     235.3          22.7                7.4 +/-    1.17      15.2 +/-    1.17  0.080 / 0.100
G30     301.0          33.7                3.0 +/-    1.02       4.9 +/-    1.02  0.120 / 0.080