PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-06:27:40
G01     223.0          13.9                5.7 +/-    3.88      14.5 +/-    3.88  0.030 / 0.030
G03     278.1          68.4                5.2 +/-    0.43       5.5 +/-    0.43  0.030 / 0.030
G09     297.7          12.9                5.1 +/-    3.57      13.3 +/-    3.57  0.190 / 0.320
G14     90.2           22.3                2.0 +/-    1.64       4.1 +/-    1.64  0.180 / 0.580
G16     137.8          50.7                5.3 +/-    1.01       6.7 +/-    1.01  0.110 / 0.180
G22     209.7          66.9                4.0 +/-    0.87       4.3 +/-    0.87  0.080 / 0.200
G23     310.6          40.2                4.0 +/-    1.61       5.8 +/-    1.61  0.080 / 0.060
G26     84.8           53.4                3.5 +/-    1.09       4.3 +/-    1.09  0.060 / 0.060
G31     47.7           26.2                2.0 +/-    1.83       3.9 +/-    1.83  0.040 / 0.050