PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/06-18:57:50
G01     320.8          12.6                7.2 +/-    1.61      18.9 +/-    1.61  0.030 / 0.040
G08     261.2          16.5               11.0 +/-    2.42      26.4 +/-    2.42  0.030 / 0.030
G10     69.5           56.0                7.5 +/-    0.59       8.9 +/-    0.59  0.120 / 0.260
G11     307.6          20.7                9.2 +/-    1.66      20.0 +/-    1.66  0.110 / 0.250
G14     278.3          69.0                9.3 +/-    0.54       9.9 +/-    0.54  0.170 / 0.360
G20     99.6           33.6                8.7 +/-    0.84      14.2 +/-    0.84  0.170 / 0.410
G27     230.8          13.7               10.6 +/-    2.46      27.1 +/-    2.46  0.060 / 0.060
G31     179.8          32.2                9.8 +/-    3.30      16.4 +/-    3.30  0.060 / 0.050
G32     350.0          72.2                9.1 +/-    0.69       9.5 +/-    0.69  0.150 / 0.490