PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-07:27:50
G07     318.3          52.1                4.2 +/-    0.67       5.1 +/-    0.67  0.100 / 0.180
G08     113.9          47.0                7.6 +/-    0.71      10.0 +/-    0.71  0.100 / 0.170
G09     194.8          81.6                4.2 +/-    0.53       4.2 +/-    0.53  0.040 / 0.050
G16     43.8           14.9                1.4 +/-    1.13       3.5 +/-    1.13  0.040 / 0.050
G23     151.1          55.0                6.8 +/-    0.40       8.1 +/-    0.40  0.050 / 0.060
G27     68.9           36.8                4.5 +/-    0.61       7.0 +/-    0.61  0.050 / 0.070
G28     229.0          19.3                5.5 +/-    3.07      12.3 +/-    3.07  0.130 / 0.340
G30     292.2          26.4                4.9 +/-    2.58       9.2 +/-    2.58  0.130 / 0.330