PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-21:57:50
G03     215.9          60.5               13.8 +/-    0.67      15.7 +/-    0.67  0.050 / 0.070
G07     254.5          13.2               13.4 +/-    1.94      34.9 +/-    1.94  0.050 / 0.070
G09     308.5          24.7               10.4 +/-    1.88      20.4 +/-    1.88  0.030 / 0.050
G16     110.0          64.7               13.6 +/-    0.72      14.8 +/-    0.72  0.030 / 0.050
G22     189.7          45.3               15.5 +/-    1.73      20.7 +/-    1.73  0.090 / 0.340
G23     327.3          57.1               10.3 +/-    1.05      12.1 +/-    1.05  0.120 / 0.270
G26     57.2           46.5                7.9 +/-    0.57      10.4 +/-    0.57  0.050 / 0.130
G31     57.3           13.1                7.5 +/-    1.08      19.4 +/-    1.08  0.090 / 0.130