PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-13:28:10
G01     124.6          13.6                7.6 +/-    3.48      19.4 +/-    3.48  0.040 / 0.040
G07     62.0           69.0                6.5 +/-    0.40       6.9 +/-    0.40  0.030 / 0.040
G08     48.1           36.6                5.3 +/-    0.46       8.2 +/-    0.46  0.150 / 0.330
G09     176.6          31.3                7.1 +/-    1.56      12.1 +/-    1.56  0.140 / 0.340
G11     114.2          37.0                7.9 +/-    1.09      12.1 +/-    1.09  0.030 / 0.030
G13     320.2          14.3                3.5 +/-    2.61       8.9 +/-    2.61  0.040 / 0.040
G17     200.3          17.9                7.4 +/-    1.74      17.2 +/-    1.74  0.050 / 0.070
G18     100.6          18.0                7.1 +/-    1.17      16.4 +/-    1.17  0.040 / 0.070
G28     281.0          54.4                7.2 +/-    1.27       8.7 +/-    1.27  0.050 / 0.110
G30     335.5          62.4                6.7 +/-    0.44       7.5 +/-    0.44  0.050 / 0.110