PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-07:43:10
G01     223.3          14.2               -5.2 +/-   34.53     -13.1 +/-   34.53  0.180 / 0.270
G03     281.4          67.5                7.4 +/-    4.26       8.0 +/-    4.26  0.220 / 0.280
G09     297.3          12.5               -6.3 +/-   25.98     -16.5 +/-   25.98  0.200 / 0.340
G14     90.9           20.2                2.1 +/-    6.12       4.6 +/-    6.12  0.210 / 0.250
G16     145.4          48.5                9.1 +/-    1.48      11.7 +/-    1.48  0.050 / 0.070
G22     206.8          67.4               16.3 +/-    8.99      17.5 +/-    8.99  0.050 / 0.100
G23     309.3          38.7                4.1 +/-    2.28       6.0 +/-    2.28  0.040 / 0.040
G26     93.2           55.3              -55.7 +/-   73.25     -66.2 +/-   73.25  0.040 / 0.030
G31     46.3           29.6               11.9 +/-   14.04      21.0 +/-   14.04  0.040 / 0.060