PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-16:13:10
G03     221.8          66.0               10.9 +/-    1.05      11.8 +/-    1.05  0.250 / 0.270
G07     250.7          13.2               11.7 +/-    1.49      30.5 +/-    1.49  0.150 / 0.210
G09     304.6          19.5                6.7 +/-    1.18      15.0 +/-    1.18  0.090 / 0.170
G14     101.9          11.8               10.4 +/-    2.22      27.9 +/-    2.22  0.110 / 0.160
G16     132.5          59.4               11.6 +/-    0.79      13.3 +/-    0.79  0.130 / 0.320
G22     189.4          49.8               12.1 +/-    0.84      15.3 +/-    0.84  0.150 / 0.360
G23     320.7          50.5               10.4 +/-    0.63      13.1 +/-    0.63  0.060 / 0.040
G26     69.8           53.3                9.7 +/-    0.86      11.7 +/-    0.86  0.050 / 0.040
G31     53.2           19.1                8.0 +/-    1.74      18.0 +/-    1.74  0.040 / 0.050