PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-12:58:10
G01     115.3          20.4                5.6 +/-    0.83      12.2 +/-    0.83  0.200 / 0.230
G07     93.4           61.5                5.2 +/-    0.46       5.8 +/-    0.46  0.140 / 0.180
G08     43.2           26.2                4.6 +/-    2.13       8.8 +/-    2.13  0.150 / 0.340
G09     174.7          19.9                7.2 +/-    2.33      15.9 +/-    2.33  0.110 / 0.290
G11     98.5           39.6                4.8 +/-    0.58       7.0 +/-    0.58  0.040 / 0.030
G13     316.7          20.6                4.1 +/-    1.80       8.8 +/-    1.80  0.030 / 0.030
G17     202.0          31.1                7.0 +/-    1.66      11.9 +/-    1.66  0.030 / 0.030
G28     300.7          58.7                2.9 +/-    1.33       3.3 +/-    1.33  0.030 / 0.030
G30     349.7          70.2                3.8 +/-    0.87       4.0 +/-    0.87  0.090 / 0.110