PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-09:43:00
G01     115.6          20.4                5.6 +/-    1.18      12.2 +/-    1.18  0.040 / 0.030
G07     91.2           63.7                5.4 +/-    0.77       5.9 +/-    0.77  0.030 / 0.030
G08     43.1           26.2                4.0 +/-    0.58       7.6 +/-    0.58  0.030 / 0.040
G09     173.3          17.8                5.2 +/-    1.76      12.1 +/-    1.76  0.030 / 0.050
G11     99.7           41.3                7.1 +/-    0.77      10.2 +/-    0.77  0.090 / 0.160
G13     315.4          22.8                1.1 +/-    2.54       2.3 +/-    2.54  0.090 / 0.160
G17     202.1          30.2                6.5 +/-    1.40      11.4 +/-    1.40  0.060 / 0.170
G18     88.6           22.1                4.4 +/-    2.15       9.2 +/-    2.15  0.090 / 0.180
G28     298.7          58.3                3.6 +/-    0.66       4.2 +/-    0.66  0.130 / 0.240
G30     350.3          71.0                5.7 +/-    0.50       6.0 +/-    0.50  0.110 / 0.240