PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-07:58:00
G01     246.0          32.7                6.8 +/-    0.88      11.3 +/-    0.88  0.040 / 0.050
G03     314.8          47.9                3.5 +/-    1.02       4.5 +/-    1.02  0.030 / 0.040
G14     63.2           40.2                4.7 +/-    0.48       6.8 +/-    0.48  0.050 / 0.090
G16     158.6          24.0               -6.2 +/-   14.93     -12.4 +/-   14.93  0.050 / 0.080
G18     217.6          23.8                6.3 +/-    1.73      12.6 +/-    1.73  0.090 / 0.280
G22     295.0          71.2                5.4 +/-    0.94       5.7 +/-    0.94  0.100 / 0.190
G23     290.9          23.5                4.9 +/-    1.90       9.9 +/-    1.90  0.080 / 0.130
G26     128.6          42.5                7.0 +/-    1.11       9.8 +/-    1.11  0.070 / 0.140
G31     40.9           51.2                3.5 +/-    0.74       4.4 +/-    0.74  0.060 / 0.090
G32     82.1           18.4                3.6 +/-    0.56       8.2 +/-    0.56  0.060 / 0.070