PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-13:12:40
G01     116.2          19.7                8.2 +/-    1.43      18.2 +/-    1.43  0.100 / 0.460
G07     91.4           62.0                7.5 +/-    0.85       8.4 +/-    0.85  0.110 / 0.420
G08     43.5           27.1                5.9 +/-    1.62      11.0 +/-    1.62  0.030 / 0.030
G09     174.9          21.1                6.6 +/-    1.03      14.1 +/-    1.03  0.030 / 0.030
G11     99.8           39.3                7.8 +/-    0.79      11.5 +/-    0.79  0.130 / 0.160
G13     317.3          19.9                5.3 +/-    1.28      11.8 +/-    1.28  0.100 / 0.200
G17     201.7          30.0                7.2 +/-    1.29      12.7 +/-    1.29  0.030 / 0.040
G28     298.7          58.3                5.5 +/-    1.11       6.3 +/-    1.11  0.030 / 0.040
G30     347.7          69.2                5.6 +/-    0.48       5.9 +/-    0.48  0.080 / 0.110