PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-15:28:10
G03     210.7          58.2               12.8 +/-    0.69      14.8 +/-    0.69  0.080 / 0.460
G07     255.7          13.8               11.2 +/-    1.53      28.7 +/-    1.53  0.100 / 0.420
G09     309.4          26.3                7.4 +/-    1.73      14.0 +/-    1.73  0.030 / 0.060
G14     107.5          10.0                8.8 +/-    3.78      24.6 +/-    3.78  0.040 / 0.070
G16     97.0           64.1               10.8 +/-    0.93      11.9 +/-    0.93  0.040 / 0.050
G22     184.6          39.7               11.8 +/-    1.50      17.2 +/-    1.50  0.040 / 0.050
G23     334.2          62.3                9.2 +/-    0.60      10.2 +/-    0.60  0.130 / 0.270
G26     53.9           42.9               10.2 +/-    0.58      14.1 +/-    0.58  0.110 / 0.200