PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-22:27:30
G01     228.1          21.2               12.1 +/-    2.18      25.9 +/-    2.18  0.040 / 0.030
G03     302.1          62.3                8.1 +/-    0.90       9.0 +/-    0.90  0.040 / 0.030
G14     77.8           32.3                9.8 +/-    1.72      16.5 +/-    1.72  0.040 / 0.050
G16     148.8          39.2               11.0 +/-    1.21      16.2 +/-    1.21  0.040 / 0.040
G22     241.6          74.0               10.1 +/-    0.84      10.4 +/-    0.84  0.040 / 0.030
G23     302.6          33.0                8.1 +/-    1.68      13.3 +/-    1.68  0.050 / 0.040
G26     108.5          52.3               11.0 +/-    0.45      13.5 +/-    0.45  0.060 / 0.100
G31     43.6           37.4                9.9 +/-    1.69      15.0 +/-    1.69  0.060 / 0.080