PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-13:27:50
G01     46.1           22.0                6.3 +/-    0.94      13.1 +/-    0.94  0.060 / 0.080
G06     177.4          29.8                9.7 +/-    1.06      17.1 +/-    1.06  0.050 / 0.090
G13     247.6          27.4                7.1 +/-    1.57      13.1 +/-    1.57  0.180 / 0.360
G15     280.3          14.7                5.6 +/-    1.21      14.1 +/-    1.21  0.210 / 0.280
G17     348.9          75.3                7.5 +/-    0.60       7.7 +/-    0.60  0.120 / 0.190
G19     259.1          66.0                5.6 +/-    0.95       6.1 +/-    0.95  0.090 / 0.210
G24     319.0          10.9              -12.0 +/-   25.14     -32.9 +/-   25.14  0.070 / 0.120
G28     60.7           50.4                7.4 +/-    0.59       9.3 +/-    0.59  0.090 / 0.110
G30     152.0          37.5                8.7 +/-    0.48      13.2 +/-    0.48  0.060 / 0.150