PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-15:27:50
G03     221.1          66.1               10.3 +/-    1.21      11.1 +/-    1.21  0.160 / 0.270
G07     250.5          13.3                9.8 +/-    1.70      25.4 +/-    1.70  0.350 / 0.370
G09     304.3          19.0                6.1 +/-    1.95      13.8 +/-    1.95  0.050 / 0.040
G14     101.6          12.1                8.5 +/-    2.73      22.7 +/-    2.73  0.050 / 0.040
G16     131.9          59.2               10.2 +/-    0.38      11.7 +/-    0.38  0.100 / 0.160
G22     188.8          49.7               10.5 +/-    0.70      13.3 +/-    0.70  0.310 / 0.180
G23     320.6          50.5                8.7 +/-    0.67      10.9 +/-    0.67  0.120 / 0.390
G26     69.8           53.1                7.2 +/-    0.70       8.7 +/-    0.70  0.350 / 0.360
G31     53.1           19.0                6.2 +/-    1.50      13.9 +/-    1.50  0.040 / 0.060