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                4.8 +/-    2.19      10.5 +/-    2.19  0.030 / 0.040
G07     91.2           63.7                6.6 +/-    0.82       7.3 +/-    0.82  0.030 / 0.040
G08     43.1           26.2                3.5 +/-    1.91       6.7 +/-    1.91  0.100 / 0.220
G09     173.3          17.8                4.0 +/-    1.78       9.2 +/-    1.78  0.090 / 0.190
G11     99.7           41.3                6.9 +/-    0.70       9.9 +/-    0.70  0.030 / 0.020
G13     315.4          22.8                1.7 +/-    1.61       3.4 +/-    1.61  0.040 / 0.030
G17     202.1          30.2                4.9 +/-    1.46       8.6 +/-    1.46  0.070 / 0.190
G18     88.6           22.1                4.6 +/-    0.65       9.6 +/-    0.65  0.140 / 0.220
G28     298.7          58.3                4.9 +/-    1.14       5.6 +/-    1.14  0.120 / 0.210
G30     350.3          71.0                5.7 +/-    0.36       6.0 +/-    0.36  0.120 / 0.190