PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-03:42:40
G07     23.5           68.6                5.2 +/-    0.62       5.5 +/-    0.62  0.100 / 0.190
G08     60.1           46.5                5.3 +/-    0.66       7.0 +/-    0.66  0.130 / 0.180
G09     179.9          47.6               10.1 +/-    0.67      13.2 +/-    0.67  0.030 / 0.050
G11     128.6          28.3                8.6 +/-    2.07      15.6 +/-    2.07  0.030 / 0.060
G23     160.6          17.9                7.6 +/-    1.29      17.6 +/-    1.29  0.040 / 0.040
G27     39.3           14.4                2.3 +/-    1.91       5.9 +/-    1.91  0.040 / 0.040
G28     262.6          47.6                6.9 +/-    4.25       8.9 +/-    4.25  0.110 / 0.240
G30     324.2          53.7                5.4 +/-    0.52       6.5 +/-    0.52  0.110 / 0.310