PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-11:42:40
G01     228.3          19.9                6.3 +/-    2.46      13.9 +/-    2.46  0.030 / 0.030
G03     290.6          69.1                5.5 +/-    0.42       5.8 +/-    0.42  0.030 / 0.030
G14     83.0           26.2                4.7 +/-    1.20       9.0 +/-    1.20  0.160 / 0.280
G16     152.3          39.4                7.1 +/-    0.96      10.4 +/-    0.96  0.150 / 0.330
G22     216.4          72.4                7.3 +/-    0.50       7.7 +/-    0.50  0.040 / 0.030
G23     305.0          35.6                5.1 +/-    1.38       8.0 +/-    1.38  0.040 / 0.030
G26     107.9          53.4                6.1 +/-    1.25       7.4 +/-    1.25  0.090 / 0.150
G31     44.1           35.5                4.8 +/-    1.28       7.5 +/-    1.28  0.100 / 0.160
G32     94.8           11.6                5.3 +/-    3.92      14.3 +/-    3.92  0.120 / 0.180