PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-05:12:50
G08     264.7          17.8                5.4 +/-    1.54      12.4 +/-    1.54  0.030 / 0.020
G10     61.3           58.9                3.3 +/-    1.05       3.8 +/-    1.05  0.030 / 0.020
G11     309.1          20.0                3.4 +/-    1.99       7.5 +/-    1.99  0.030 / 0.030
G14     272.4          68.2                4.7 +/-    0.71       5.0 +/-    0.71  0.030 / 0.020
G18     91.6           37.5                3.5 +/-    0.93       5.2 +/-    0.93  0.210 / 0.540
G21     154.4          14.6                4.7 +/-    2.58      11.9 +/-    2.58  0.210 / 0.370
G24     39.9           10.8                5.4 +/-    3.43      14.7 +/-    3.43  0.220 / 0.210
G27     229.7          14.8                4.4 +/-    2.12      11.1 +/-    2.12  0.080 / 0.190
G31     177.9          31.5                5.3 +/-    1.61       9.0 +/-    1.61  0.070 / 0.050
G32     339.4          73.8                5.6 +/-    0.55       5.8 +/-    0.55  0.070 / 0.060