PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-14:43:10
G03     218.4          65.5               10.9 +/-    0.94      11.8 +/-    0.94  0.100 / 0.170
G07     250.9          13.9                8.7 +/-    4.42      22.1 +/-    4.42  0.100 / 0.180
G09     304.5          19.2                7.0 +/-    1.09      15.7 +/-    1.09  0.070 / 0.490
G14     101.9          11.9               10.0 +/-    2.11      26.9 +/-    2.11  0.130 / 0.430
G16     129.8          59.7               12.6 +/-    0.61      14.3 +/-    0.61  0.040 / 0.030
G22     187.8          48.6               11.1 +/-    0.75      14.2 +/-    0.75  0.040 / 0.040
G23     321.3          51.2                9.6 +/-    0.62      12.0 +/-    0.62  0.140 / 0.300
G26     68.6           52.5                8.8 +/-    0.90      10.8 +/-    0.90  0.150 / 0.270
G31     53.5           18.3                7.4 +/-    1.55      17.0 +/-    1.55  0.050 / 0.070