PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-20:27:50
G01     51.0           26.1               11.6 +/-    1.09      22.1 +/-    1.09  0.110 / 0.350
G06     177.4          24.8               16.2 +/-    1.58      31.9 +/-    1.58  0.110 / 0.350
G07     146.1          13.8               17.3 +/-    4.22      44.2 +/-    4.22  0.050 / 0.070
G11     45.2           16.8                9.2 +/-    1.22      21.9 +/-    1.22  0.040 / 0.070
G13     251.8          30.9               15.4 +/-    0.98      26.5 +/-    0.98  0.030 / 0.060
G15     285.1          15.7               11.8 +/-    2.36      28.8 +/-    2.36  0.040 / 0.060
G17     292.6          77.5               13.6 +/-    0.67      13.9 +/-    0.67  0.080 / 0.310
G19     244.4          57.7               15.3 +/-    0.58      17.8 +/-    0.58  0.120 / 0.350
G28     51.4           53.1               11.3 +/-    0.46      13.8 +/-    0.46  0.180 / 0.350
G30     149.0          41.5               15.5 +/-    1.23      22.0 +/-    1.23  0.150 / 0.360