PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-08:27:50
G01     56.0           28.8                5.0 +/-    1.44       8.9 +/-    1.44  0.040 / 0.050
G06     181.6          16.1                6.3 +/-    1.62      15.4 +/-    1.62  0.050 / 0.050
G07     143.9          17.6                6.6 +/-    1.82      15.4 +/-    1.82  0.080 / 0.120
G11     46.6           19.9                4.5 +/-    2.55      10.0 +/-    2.55  0.090 / 0.120
G13     259.6          33.4                5.7 +/-    1.79       9.3 +/-    1.79  0.020 / 0.020
G15     289.9          16.6                4.3 +/-    1.06      10.3 +/-    1.06  0.040 / 0.020
G17     285.7          79.3                7.5 +/-    0.52       7.7 +/-    0.52  0.120 / 0.210
G19     238.2          56.0                8.0 +/-    2.42       9.4 +/-    2.42  0.120 / 0.250
G28     43.4           54.9                5.6 +/-    2.03       6.7 +/-    2.03  0.110 / 0.080
G30     145.8          47.6                9.8 +/-    0.46      12.8 +/-    0.46  0.140 / 0.070