PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-12:13:10
G01     226.2          17.8                5.6 +/-    1.58      12.9 +/-    1.58  0.040 / 0.040
G03     281.8          71.0                4.2 +/-    0.91       4.4 +/-    0.91  0.040 / 0.050
G14     85.6           24.3                5.4 +/-    1.32      10.6 +/-    1.32  0.030 / 0.050
G16     150.5          42.1                6.4 +/-    0.61       9.0 +/-    0.61  0.030 / 0.040
G22     208.5          69.8                6.1 +/-    0.82       6.5 +/-    0.82  0.150 / 0.370
G23     307.0          37.4                3.8 +/-    1.37       5.8 +/-    1.37  0.170 / 0.400
G26     103.0          54.4                5.2 +/-    0.55       6.3 +/-    0.55  0.120 / 0.190
G31     45.0           33.2                2.9 +/-    0.94       4.7 +/-    0.94  0.100 / 0.200
G32     96.9           10.1                4.1 +/-    2.24      11.4 +/-    2.24  0.060 / 0.100