PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-07:58:00
G07     28.8           68.7                5.7 +/-    0.49       6.1 +/-    0.49  0.020 / 0.040
G08     58.3           44.9                5.7 +/-    0.61       7.7 +/-    0.61  0.020 / 0.040
G09     178.3          45.4                8.9 +/-    0.80      11.9 +/-    0.80  0.060 / 0.080
G11     126.1          28.8                7.8 +/-    1.22      14.0 +/-    1.22  0.050 / 0.090
G23     160.9          18.1                5.9 +/-    1.88      13.7 +/-    1.88  0.040 / 0.060
G27     39.0           13.8                1.5 +/-    1.04       3.7 +/-    1.04  0.040 / 0.070
G28     263.5          47.9                8.5 +/-    0.63      11.0 +/-    0.63  0.040 / 0.060
G30     322.7          52.3                6.8 +/-    1.13       8.3 +/-    1.13  0.040 / 0.070