PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-15:57:50
G01     223.0          14.4                7.1 +/-    4.03      17.8 +/-    4.03  0.280 / 0.260
G03     267.2          71.8                7.2 +/-    0.50       7.6 +/-    0.50  0.130 / 0.280
G14     90.1           21.0                8.0 +/-    1.07      17.3 +/-    1.07  0.040 / 0.040
G16     150.4          45.6                9.4 +/-    1.31      12.6 +/-    1.31  0.040 / 0.040
G22     200.7          65.2                7.6 +/-    0.42       8.3 +/-    0.42  0.040 / 0.060
G23     309.7          39.4                6.0 +/-    1.32       8.8 +/-    1.32  0.050 / 0.050
G26     97.3           56.1                7.0 +/-    1.17       8.2 +/-    1.17  0.040 / 0.030
G31     46.3           30.8                6.1 +/-    1.06      10.5 +/-    1.06  0.050 / 0.040