PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-02:58:00
G07     23.0           68.7                4.6 +/-    0.84       4.9 +/-    0.84  0.100 / 0.190
G08     60.4           46.8                5.1 +/-    0.43       6.7 +/-    0.43  0.130 / 0.180
G09     180.1          47.8                8.8 +/-    0.66      11.4 +/-    0.66  0.050 / 0.040
G11     129.0          28.3                7.1 +/-    2.35      12.8 +/-    2.35  0.040 / 0.050
G23     160.5          17.7                8.1 +/-    0.95      18.9 +/-    0.95  0.040 / 0.060
G27     39.3           14.4                3.1 +/-    2.11       7.9 +/-    2.11  0.050 / 0.050
G28     262.6          47.6                2.7 +/-    4.32       3.5 +/-    4.32  0.110 / 0.260
G30     324.7          54.1                4.1 +/-    0.61       5.0 +/-    0.61  0.120 / 0.280