PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-09:27:50
G03     220.3          64.0                6.6 +/-    1.09       7.3 +/-    1.09  0.040 / 0.060
G07     253.0          15.0                4.8 +/-    2.75      11.9 +/-    2.75  0.040 / 0.060
G09     306.3          21.7                3.7 +/-    2.63       7.8 +/-    2.63  0.040 / 0.040
G14     104.0          10.7                4.3 +/-    2.07      11.7 +/-    2.07  0.050 / 0.050
G16     114.9          62.0                8.5 +/-    0.35       9.5 +/-    0.35  0.070 / 0.230
G22     191.5          48.4                6.2 +/-    0.44       7.9 +/-    0.44  0.080 / 0.220
G23     327.6          57.1                6.4 +/-    1.16       7.5 +/-    1.16  0.160 / 0.360
G26     61.4           48.4                5.3 +/-    1.43       6.8 +/-    1.43  0.260 / 0.360
G31     55.9           13.9                2.3 +/-    3.01       5.9 +/-    3.01  0.030 / 0.040