PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-13:43:10
G01     225.1          16.6                6.4 +/-    1.24      15.3 +/-    1.24  0.130 / 0.250
G03     273.2          72.3                8.2 +/-    0.70       8.5 +/-    0.70  0.120 / 0.250
G14     87.3           23.1                7.7 +/-    2.10      15.7 +/-    2.10  0.030 / 0.030
G16     150.5          43.4                9.9 +/-    0.90      13.6 +/-    0.90  0.030 / 0.040
G22     200.2          67.1                8.5 +/-    0.55       9.1 +/-    0.55  0.090 / 0.200
G23     307.9          37.9                6.2 +/-    1.32       9.3 +/-    1.32  0.120 / 0.200
G26     101.0          55.1                8.5 +/-    0.87      10.1 +/-    0.87  0.220 / 0.350
G31     45.5           32.3                6.6 +/-    1.71      11.0 +/-    1.71  0.210 / 0.280
G32     97.8           10.3                9.0 +/-    2.26      25.0 +/-    2.26  0.030 / 0.040