PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-00:12:30
G07     316.6          51.0                5.6 +/-    1.13       6.9 +/-    1.13  0.230 / 0.480
G08     119.1          46.4                9.3 +/-    0.72      12.2 +/-    0.72  0.180 / 0.450
G09     256.5          82.7                9.3 +/-    0.50       9.4 +/-    0.50  0.030 / 0.050
G16     43.2           19.1                3.4 +/-    2.80       7.7 +/-    2.80  0.040 / 0.050
G23     150.0          54.6                8.4 +/-    0.49      10.0 +/-    0.49  0.100 / 0.350
G27     67.4           35.8                5.3 +/-    0.98       8.3 +/-    0.98  0.160 / 0.220
G28     229.0          20.3                7.2 +/-    1.97      15.7 +/-    1.97  0.040 / 0.050
G30     293.8          29.7                6.3 +/-    1.99      11.1 +/-    1.99  0.050 / 0.050