PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-07:12:50
G01     238.2          28.9                4.7 +/-    1.42       8.4 +/-    1.42  0.050 / 0.030
G03     311.8          55.4                2.5 +/-    1.31       3.0 +/-    1.31  0.030 / 0.040
G14     70.4           34.8                2.0 +/-    2.00       3.3 +/-    2.00  0.040 / 0.060
G16     157.4          28.0                3.5 +/-    1.47       6.4 +/-    1.47  0.040 / 0.050
G18     212.3          18.4                4.1 +/-    2.60       9.5 +/-    2.60  0.100 / 0.160
G22     278.6          74.1                3.5 +/-    0.76       3.6 +/-    0.76  0.130 / 0.150
G23     296.8          29.8                3.7 +/-    1.71       6.5 +/-    1.71  0.060 / 0.120
G26     124.8          46.4                5.1 +/-    1.09       6.7 +/-    1.09  0.050 / 0.120
G31     41.5           46.1                1.6 +/-    1.11       2.2 +/-    1.11  0.260 / 0.450
G32     85.3           17.5                2.5 +/-    1.64       5.9 +/-    1.64  0.410 / 0.520