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                6.1 +/-    1.42      13.3 +/-    1.42  0.020 / 0.040
G07     93.4           61.5                4.6 +/-    0.93       5.1 +/-    0.93  0.020 / 0.040
G08     43.2           26.2                4.6 +/-    0.41       8.7 +/-    0.41  0.130 / 0.410
G09     174.7          19.9                5.6 +/-    1.98      12.3 +/-    1.98  0.090 / 0.310
G11     98.5           39.6                5.9 +/-    0.36       8.6 +/-    0.36  0.030 / 0.040
G13     316.7          20.6                3.4 +/-    2.78       7.5 +/-    2.78  0.030 / 0.040
G17     202.0          31.1                6.0 +/-    1.62      10.2 +/-    1.62  0.090 / 0.140
G28     300.7          58.7                3.5 +/-    0.67       4.0 +/-    0.67  0.090 / 0.130
G30     349.7          70.2                3.1 +/-    0.60       3.3 +/-    0.60  0.050 / 0.120