PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-08:27:50
G01     240.0          28.8                6.0 +/-    1.00      10.8 +/-    1.00  0.030 / 0.040
G03     311.7          53.8                5.3 +/-    1.35       6.4 +/-    1.35  0.030 / 0.030
G14     69.4           36.7                3.8 +/-    0.78       5.8 +/-    0.78  0.060 / 0.140
G16     155.5          29.8                7.0 +/-    1.02      12.4 +/-    1.02  0.060 / 0.120
G18     213.6          19.1                5.5 +/-    1.98      12.3 +/-    1.98  0.090 / 0.150
G22     275.7          75.2                5.0 +/-    0.56       5.2 +/-    0.56  0.080 / 0.150
G23     295.6          27.6                2.3 +/-    1.82       4.3 +/-    1.82  0.090 / 0.170
G26     121.2          46.8                7.8 +/-    1.40      10.3 +/-    1.40  0.080 / 0.150
G31     41.3           45.2                2.9 +/-    1.10       3.9 +/-    1.10  0.040 / 0.050
G32     87.0           14.7                3.0 +/-    1.02       7.5 +/-    1.02  0.040 / 0.060