PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-11:57:50
G01     226.1          17.7                3.7 +/-    1.85       8.5 +/-    1.85  0.040 / 0.030
G03     281.8          70.8                3.3 +/-    0.84       3.5 +/-    0.84  0.040 / 0.040
G14     85.7           24.3                4.5 +/-    1.88       9.0 +/-    1.88  0.150 / 0.170
G16     150.2          42.4                4.2 +/-    0.84       5.9 +/-    0.84  0.110 / 0.190
G22     209.0          69.8                3.7 +/-    0.82       4.0 +/-    0.82  0.030 / 0.050
G23     307.3          37.7                2.4 +/-    1.41       3.6 +/-    1.41  0.040 / 0.040
G26     102.4          54.4                3.3 +/-    0.83       3.9 +/-    0.83  0.110 / 0.210
G31     45.1           32.9                3.9 +/-    1.59       6.5 +/-    1.59  0.210 / 0.200
G32     97.1           9.8                 5.6 +/-    1.42      15.6 +/-    1.42  0.050 / 0.070