PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-08:27:50
G01     245.3          32.3                7.1 +/-    1.43      11.9 +/-    1.43  0.030 / 0.040
G03     314.5          48.7                3.3 +/-    1.59       4.2 +/-    1.59  0.030 / 0.040
G14     63.7           40.0                4.3 +/-    0.69       6.2 +/-    0.69  0.060 / 0.090
G16     158.4          24.6               -4.4 +/-   14.79      -8.8 +/-   14.79  0.060 / 0.090
G18     217.2          23.4                6.2 +/-    1.35      12.5 +/-    1.35  0.060 / 0.070
G22     293.0          72.1                4.8 +/-    0.87       5.1 +/-    0.87  0.050 / 0.070
G23     291.5          24.2                5.4 +/-    1.03      10.8 +/-    1.03  0.080 / 0.120
G26     128.0          43.0                6.3 +/-    0.77       8.8 +/-    0.77  0.070 / 0.100
G31     40.9           50.6                2.3 +/-    0.95       2.9 +/-    0.95  0.100 / 0.210
G32     82.6           18.0                3.2 +/-    1.10       7.5 +/-    1.10  0.110 / 0.210