PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-15:42:40
G02     226.5          68.5               12.6 +/-    0.83      13.4 +/-    0.83  0.070 / 0.090
G06     44.0           66.2               11.8 +/-    0.33      12.7 +/-    0.33  0.060 / 0.080
G12     321.1          45.1               10.5 +/-    0.82      14.1 +/-    0.82  0.030 / 0.040
G17     67.3           24.0               11.4 +/-    1.03      22.8 +/-    1.03  0.030 / 0.050
G19     52.4           41.2                9.5 +/-    0.95      13.5 +/-    0.95  0.080 / 0.110
G24     255.0          38.4               12.1 +/-    2.66      18.2 +/-    2.66  0.080 / 0.080