PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/03-08:27:50
G01     247.3          33.4                7.2 +/-    1.47      11.7 +/-    1.47  0.050 / 0.080
G03     315.1          47.0                5.0 +/-    0.94       6.6 +/-    0.94  0.050 / 0.080
G14     61.7           41.2                3.8 +/-    1.35       5.5 +/-    1.35  0.050 / 0.030
G16     159.3          22.8               -6.8 +/-    6.90     -14.0 +/-    6.90  0.040 / 0.030
G18     218.5          24.8                5.3 +/-    2.42      10.4 +/-    2.42  0.080 / 0.110
G22     297.1          70.7                6.9 +/-    0.54       7.2 +/-    0.54  0.120 / 0.110
G23     290.2          23.1                5.3 +/-    1.93      10.8 +/-    1.93  0.070 / 0.160
G26     130.0          41.6                5.6 +/-    1.06       7.9 +/-    1.06  0.150 / 0.150
G31     41.0           52.4                4.6 +/-    0.63       5.6 +/-    0.63  0.400 / 0.360
G32     81.1           19.1                3.8 +/-    1.36       8.6 +/-    1.36  0.370 / 0.250