PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-07:42:40
G07     10.7           66.9                6.3 +/-    0.88       6.8 +/-    0.88  0.030 / 0.030
G08     66.8           48.7                6.8 +/-    0.72       8.7 +/-    0.72  0.030 / 0.040
G09     179.2          52.9                8.1 +/-    0.95       9.9 +/-    0.95  0.050 / 0.110
G11     131.9          24.4                8.1 +/-    2.16      16.1 +/-    2.16  0.050 / 0.100
G23     160.2          24.9                6.5 +/-    1.29      12.8 +/-    1.29  0.030 / 0.040
G27     41.8           19.0                3.4 +/-    1.27       7.6 +/-    1.27  0.050 / 0.070
G28     255.1          43.5                8.1 +/-    1.81      11.2 +/-    1.81  0.030 / 0.050
G30     316.5          47.1                4.0 +/-    0.49       5.3 +/-    0.49  0.030 / 0.050