PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-20:27:50
G01     236.8          26.2               10.8 +/-    1.85      20.6 +/-    1.85  0.030 / 0.040
G03     307.9          58.8                7.2 +/-    0.67       8.2 +/-    0.67  0.040 / 0.040
G14     74.5           32.6                8.8 +/-    1.06      14.6 +/-    1.06  0.030 / 0.050
G16     157.8          30.9               12.9 +/-    1.39      22.2 +/-    1.39  0.040 / 0.070
G22     265.3          75.6                7.8 +/-    1.14       8.1 +/-    1.14  0.080 / 0.150
G23     297.6          28.5                7.3 +/-    2.16      13.1 +/-    2.16  0.080 / 0.140
G26     120.6          48.8               12.2 +/-    0.67      15.6 +/-    0.67  0.070 / 0.150
G31     41.0           44.7                5.3 +/-    0.40       7.2 +/-    0.40  0.070 / 0.150
G32     89.3           14.1                8.5 +/-    1.24      21.6 +/-    1.24  0.090 / 0.190