PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-11:12:30
G07     344.1          61.3                2.9 +/-    0.67       3.3 +/-    0.67  0.050 / 0.080
G08     89.3           51.5                3.0 +/-    0.69       3.8 +/-    0.69  0.040 / 0.080
G09     180.9          67.4                5.8 +/-    0.65       6.2 +/-    0.65  0.050 / 0.120
G11     141.0          15.3                5.3 +/-    2.47      13.1 +/-    2.47  0.060 / 0.100
G23     157.1          39.6                5.2 +/-    1.05       7.5 +/-    1.05  0.030 / 0.050
G27     51.0           28.7                1.6 +/-    0.72       2.9 +/-    0.72  0.040 / 0.050
G28     240.7          32.7                6.3 +/-    1.78      10.5 +/-    1.78  0.060 / 0.090
G30     303.7          35.7                4.4 +/-    0.78       6.9 +/-    0.78  0.050 / 0.080