PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-14:12:40
G01     222.4          13.9                8.8 +/-    2.65      22.6 +/-    2.65  0.160 / 0.350
G03     259.9          72.6               10.0 +/-    0.39      10.5 +/-    0.39  0.150 / 0.660
G14     90.6           20.7                8.3 +/-    1.90      17.9 +/-    1.90  0.040 / 0.030
G16     147.7          47.0               12.2 +/-    0.69      15.9 +/-    0.69  0.040 / 0.030
G22     196.5          63.4               10.2 +/-    0.55      11.3 +/-    0.55  0.190 / 0.250
G23     310.7          40.5                7.2 +/-    1.58      10.3 +/-    1.58  0.150 / 0.240
G26     93.9           55.7                9.6 +/-    0.66      11.4 +/-    0.66  0.050 / 0.040
G31     46.9           29.2                7.6 +/-    1.70      13.5 +/-    1.70  0.050 / 0.040