PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-14:58:00
G01     239.5          28.3                9.5 +/-    1.49      17.2 +/-    1.49  0.080 / 0.120
G03     309.8          58.5                7.2 +/-    1.77       8.3 +/-    1.77  0.070 / 0.120
G14     69.9           36.5                7.7 +/-    0.35      11.8 +/-    0.35  0.040 / 0.060
G16     156.7          29.6               11.8 +/-    0.91      20.8 +/-    0.91  0.050 / 0.060
G18     214.0          19.0               12.3 +/-    3.04      27.7 +/-    3.04  0.090 / 0.160
G22     264.0          77.2                9.7 +/-    0.64      10.0 +/-    0.64  0.110 / 0.160
G23     297.0          29.5                6.5 +/-    2.02      11.5 +/-    2.02  0.060 / 0.170
G26     121.4          47.1               11.2 +/-    2.14      14.7 +/-    2.14  0.080 / 0.180
G31     41.2           45.3                5.7 +/-    0.60       7.7 +/-    0.60  0.030 / 0.030
G32     87.4           14.7                6.9 +/-    1.41      17.3 +/-    1.41  0.030 / 0.040