PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-22:27:50
G03     199.2          41.5                9.8 +/-    0.67      13.9 +/-    0.67  0.130 / 0.180
G07     270.0          24.8                8.6 +/-    2.02      16.9 +/-    2.02  0.100 / 0.110
G08     155.9          10.4              -10.1 +/-   33.47     -27.8 +/-   33.47  0.090 / 0.170
G09     316.8          40.8                7.3 +/-    0.96      10.4 +/-    0.96  0.150 / 0.130
G16     61.9           60.3                8.4 +/-    0.76       9.5 +/-    0.76  0.150 / 0.370
G22     183.5          25.9                9.0 +/-    2.26      17.2 +/-    2.26  0.200 / 0.380
G23     350.7          74.1                7.8 +/-    1.04       8.1 +/-    1.04  0.030 / 0.040
G26     45.0           30.9                6.0 +/-    1.10      10.2 +/-    1.10  0.040 / 0.040
G27     120.6          21.6               10.3 +/-    1.73      21.8 +/-    1.73  0.080 / 0.140