PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-21:57:40
G01     241.1          32.0                9.5 +/-    1.33      16.0 +/-    1.33  0.040 / 0.040
G03     314.9          48.3                8.3 +/-    0.86      10.7 +/-    0.86  0.040 / 0.040
G14     62.3           41.3                6.1 +/-    2.53       8.7 +/-    2.53  0.050 / 0.080
G16     158.1          24.5                9.9 +/-    4.02      19.5 +/-    4.02  0.050 / 0.100
G22     295.1          69.7                9.5 +/-    0.75      10.0 +/-    0.75  0.060 / 0.060
G23     291.2          23.2                8.5 +/-    1.79      17.3 +/-    1.79  0.040 / 0.080
G26     130.1          43.0               10.3 +/-    1.03      14.3 +/-    1.03  0.100 / 0.220
G31     41.1           52.0                8.4 +/-    0.94      10.3 +/-    0.94  0.120 / 0.280
G32     82.7           17.8                8.4 +/-    1.59      19.5 +/-    1.59  0.060 / 0.050