PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-12:12:40
G01     70.1           32.7                3.2 +/-    0.84       5.3 +/-    0.84  0.060 / 0.110
G07     137.5          28.4                4.3 +/-    1.20       7.9 +/-    1.20  0.060 / 0.110
G11     52.7           28.4                2.4 +/-    1.69       4.3 +/-    1.69  0.050 / 0.090
G13     276.5          36.7                6.3 +/-    1.02       9.7 +/-    1.02  0.050 / 0.110
G15     303.5          14.9                0.5 +/-    1.94       1.2 +/-    1.94  0.030 / 0.030
G17     236.1          72.1                4.9 +/-    0.89       5.1 +/-    0.89  0.030 / 0.030
G19     224.7          44.4                5.9 +/-    2.06       8.0 +/-    2.06  0.060 / 0.050
G28     21.1           58.9                1.7 +/-    1.74       1.9 +/-    1.74  0.050 / 0.050
G30     135.1          62.9                4.1 +/-    0.64       4.5 +/-    0.64  0.110 / 0.240