PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-12:58:10
G10     244.1          20.3                2.6 +/-    1.94       5.7 +/-    1.94  0.030 / 0.050
G13     62.6           34.6                1.1 +/-    0.72       1.8 +/-    0.72  0.030 / 0.040
G15     100.1          56.8                3.4 +/-    0.94       3.9 +/-    0.94  0.030 / 0.050
G16     306.2          13.8                3.0 +/-    2.21       7.7 +/-    2.21  0.040 / 0.060
G18     259.8          53.0                4.8 +/-    1.14       5.9 +/-    1.14  0.120 / 0.230
G20     32.7           59.6                1.3 +/-    0.82       1.4 +/-    0.82  0.120 / 0.180
G21     328.9          57.5               -0.0 +/-    0.49      -0.1 +/-    0.49  0.110 / 0.340
G26     276.9          18.1                3.0 +/-    2.13       7.0 +/-    2.13  0.100 / 0.260
G29     160.6          56.1                3.0 +/-    0.50       3.6 +/-    0.50  0.060 / 0.110