PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-11:42:30
G07     349.0          62.6                3.5 +/-    0.66       3.9 +/-    0.66  0.070 / 0.080
G08     84.9           51.5                3.7 +/-    0.67       4.6 +/-    0.67  0.060 / 0.110
G09     180.3          64.8                5.3 +/-    1.06       5.8 +/-    1.06  0.050 / 0.100
G11     139.2          16.9                4.5 +/-    2.21      10.8 +/-    2.21  0.050 / 0.080
G23     157.7          36.9                5.5 +/-    1.74       8.4 +/-    1.74  0.050 / 0.090
G27     49.0           27.2                1.9 +/-    0.97       3.5 +/-    0.97  0.050 / 0.130
G28     242.9          34.6                4.9 +/-    1.32       7.9 +/-    1.32  0.040 / 0.050
G30     305.6          37.3                4.3 +/-    1.29       6.5 +/-    1.29  0.040 / 0.040