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               10.9 +/-    2.77      20.8 +/-    2.77  0.070 / 0.180
G06     177.4          24.8               13.5 +/-    1.03      26.5 +/-    1.03  0.080 / 0.180
G07     146.1          13.8               14.9 +/-    2.23      38.0 +/-    2.23  0.060 / 0.050
G11     45.2           16.8               10.3 +/-    1.83      24.5 +/-    1.83  0.050 / 0.080
G13     251.8          30.9               13.5 +/-    3.46      23.2 +/-    3.46  0.190 / 0.310
G15     285.1          15.7               11.7 +/-    0.76      28.5 +/-    0.76  0.120 / 0.230
G17     292.6          77.5               12.2 +/-    0.78      12.5 +/-    0.78  0.030 / 0.070
G19     244.4          57.7               14.0 +/-    1.66      16.2 +/-    1.66  0.030 / 0.050
G28     51.4           53.1               11.4 +/-    1.14      13.9 +/-    1.14  0.080 / 0.160
G30     149.0          41.5               13.6 +/-    1.35      19.3 +/-    1.35  0.110 / 0.140