PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-10:12:40
G01     127.0          11.6                5.0 +/-    4.89      13.6 +/-    4.89  0.040 / 0.040
G07     57.7           68.3                3.2 +/-    0.66       3.4 +/-    0.66  0.040 / 0.040
G08     49.8           38.0                3.6 +/-    0.48       5.4 +/-    0.48  0.050 / 0.090
G09     176.5          34.4                7.0 +/-    1.36      11.3 +/-    1.36  0.050 / 0.090
G11     116.3          34.2                6.6 +/-    0.93      10.7 +/-    0.93  0.040 / 0.060
G17     199.2          17.0                5.0 +/-    2.12      11.8 +/-    2.12  0.040 / 0.050
G28     276.7          53.0                5.3 +/-    0.88       6.5 +/-    0.88  0.080 / 0.120
G30     331.3          59.1                2.9 +/-    0.75       3.3 +/-    0.75  0.080 / 0.150