PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-12:27:50
G01     49.7           25.3                4.4 +/-    0.88       8.5 +/-    0.88  0.080 / 0.230
G06     176.7          26.4                5.5 +/-    0.88      10.4 +/-    0.88  0.130 / 0.210
G07     146.3          11.6                4.2 +/-    1.28      11.3 +/-    1.28  0.050 / 0.060
G11     44.2           13.8                2.4 +/-    1.47       6.0 +/-    1.47  0.040 / 0.060
G13     249.7          30.3                6.6 +/-    1.29      11.5 +/-    1.29  0.080 / 0.120
G15     288.7          14.0                3.5 +/-    1.37       8.9 +/-    1.37  0.070 / 0.130
G17     323.9          78.5                5.7 +/-    0.75       5.8 +/-    0.75  0.070 / 0.170
G19     244.4          55.5                5.9 +/-    1.16       6.9 +/-    1.16  0.070 / 0.150
G28     52.0           53.3                4.2 +/-    0.36       5.1 +/-    0.36  0.060 / 0.160
G30     150.4          42.5                5.9 +/-    1.10       8.2 +/-    1.10  0.070 / 0.140