PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-19:27:50
G01     53.7           27.7                9.4 +/-    1.21      17.2 +/-    1.21  0.090 / 0.340
G06     177.9          21.9               14.9 +/-   30.51      31.2 +/-   30.51  0.100 / 0.350
G07     145.0          16.6               17.5 +/-    1.70      41.7 +/-    1.70  0.060 / 0.160
G11     46.0           19.0                9.8 +/-    1.04      22.1 +/-    1.04  0.070 / 0.170
G13     255.0          32.5               14.8 +/-    1.10      24.7 +/-    1.10  0.060 / 0.060
G15     288.4          15.9               11.0 +/-    1.09      26.7 +/-    1.09  0.050 / 0.060
G17     280.1          77.2               14.6 +/-    0.62      14.9 +/-    0.62  0.040 / 0.070
G19     239.9          54.7               16.5 +/-    1.35      19.7 +/-    1.35  0.040 / 0.060
G28     46.5           54.4               11.8 +/-    0.32      14.2 +/-    0.32  0.030 / 0.030
G30     147.6          45.1               15.3 +/-    1.02      20.6 +/-    1.02  0.030 / 0.030