PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-15:13:10
G01     221.4          12.7                6.0 +/-    3.61      15.8 +/-    3.61  0.170 / 0.460
G03     256.6          72.2                7.7 +/-    0.60       8.0 +/-    0.60  0.100 / 0.200
G14     92.1           19.6                7.9 +/-    2.41      17.5 +/-    2.41  0.040 / 0.040
G16     147.3          48.3                8.9 +/-    0.73      11.4 +/-    0.73  0.050 / 0.040
G22     196.7          62.3                7.7 +/-    0.52       8.5 +/-    0.52  0.120 / 0.280
G23     311.6          41.3                6.1 +/-    1.46       8.7 +/-    1.46  0.130 / 0.220
G26     91.7           56.0                6.4 +/-    1.18       7.5 +/-    1.18  0.050 / 0.050
G31     47.5           28.4                5.4 +/-    1.46       9.8 +/-    1.46  0.050 / 0.040