PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-04:57:40
G01     222.9          13.7                4.0 +/-    2.47      10.2 +/-    2.47  0.100 / 0.080
G03     278.9          67.9                4.7 +/-    0.47       5.1 +/-    0.47  0.050 / 0.080
G09     297.5          12.4                3.1 +/-   10.09       8.1 +/-   10.09  0.160 / 0.310
G14     91.5           19.9                3.1 +/-    3.33       6.9 +/-    3.33  0.150 / 0.510
G16     147.1          48.3                7.8 +/-    0.74      10.0 +/-    0.74  0.280 / 0.320
G22     208.4          67.2                4.7 +/-    0.63       5.0 +/-    0.63  0.390 / 0.250
G23     309.8          39.1                3.3 +/-    0.98       4.9 +/-    0.98  0.040 / 0.030
G26     94.8           56.1                5.7 +/-    0.74       6.7 +/-    0.74  0.040 / 0.030
G31     46.1           30.8                2.7 +/-    1.02       4.7 +/-    1.02  0.110 / 0.090