PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-10:58:00
G01     125.5          12.8                3.4 +/-    2.10       8.8 +/-    2.10  0.110 / 0.260
G07     63.6           67.7                6.2 +/-    0.44       6.6 +/-    0.44  0.200 / 0.350
G08     48.5           36.4                4.2 +/-    1.22       6.4 +/-    1.22  0.030 / 0.030
G09     176.0          32.1                5.3 +/-    1.13       8.9 +/-    1.13  0.030 / 0.030
G11     114.0          35.1                6.1 +/-    1.82       9.7 +/-    1.82  0.040 / 0.030
G13     321.5          11.0               -2.2 +/-   14.16      -5.9 +/-   14.16  0.030 / 0.030
G17     199.4          18.8                4.6 +/-    3.57      10.4 +/-    3.57  0.210 / 0.280
G28     279.6          53.9                5.8 +/-    2.44       6.9 +/-    2.44  0.130 / 0.190
G30     333.1          60.4                4.1 +/-    0.61       4.6 +/-    0.61  0.060 / 0.040