PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-07:57:50
G07     334.7          58.7                4.4 +/-    1.08       5.0 +/-    1.08  0.090 / 0.100
G08     95.1           51.4                7.4 +/-    0.48       9.2 +/-    0.48  0.090 / 0.090
G09     178.2          68.7                6.1 +/-    1.32       6.5 +/-    1.32  0.030 / 0.050
G11     144.4          14.0                5.2 +/-    2.20      13.2 +/-    2.20  0.040 / 0.040
G23     156.2          42.2                8.0 +/-    1.03      11.2 +/-    1.03  0.060 / 0.070
G27     55.6           32.3                3.7 +/-    0.42       6.2 +/-    0.42  0.070 / 0.080
G28     237.3          29.0                6.3 +/-    1.82      11.3 +/-    1.82  0.050 / 0.080
G30     301.4          34.0                4.6 +/-    1.73       7.4 +/-    1.73  0.050 / 0.080