PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-06:57:50
G07     327.6          56.1                4.8 +/-    0.51       5.6 +/-    0.51  0.020 / 0.040
G08     103.1          50.1                7.2 +/-    0.46       9.1 +/-    0.46  0.030 / 0.040
G09     179.4          73.6                6.8 +/-    0.34       7.0 +/-    0.34  0.110 / 0.090
G11     147.4          11.0                3.0 +/-   11.82       8.1 +/-   11.82  0.170 / 0.110
G23     154.5          47.8                7.0 +/-    0.85       9.1 +/-    0.85  0.070 / 0.060
G27     60.9           34.7                5.1 +/-    1.39       8.1 +/-    1.39  0.070 / 0.080
G28     233.6          24.9                7.1 +/-    2.32      13.9 +/-    2.32  0.030 / 0.060
G30     297.5          30.7                5.9 +/-    2.00      10.1 +/-    2.00  0.050 / 0.070