PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-11:42:30
G07     345.6          61.7                3.1 +/-    0.79       3.5 +/-    0.79  0.060 / 0.110
G08     88.2           51.6                2.5 +/-    0.61       3.1 +/-    0.61  0.060 / 0.090
G09     181.2          67.0                3.1 +/-    0.50       3.3 +/-    0.50  0.040 / 0.050
G11     140.5          15.7                4.6 +/-    1.71      11.2 +/-    1.71  0.040 / 0.040
G23     157.2          38.8                4.7 +/-    1.09       7.0 +/-    1.09  0.050 / 0.080
G27     50.5           28.3                1.3 +/-    0.88       2.3 +/-    0.88  0.050 / 0.070
G28     241.2          33.1                7.1 +/-    2.50      11.7 +/-    2.50  0.050 / 0.080
G30     304.1          36.0                4.2 +/-    1.43       6.5 +/-    1.43  0.040 / 0.080