PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-10:27:50
G01     124.6          13.6                4.0 +/-    3.01      10.2 +/-    3.01  0.100 / 0.420
G08     47.8           35.5                2.7 +/-    1.25       4.3 +/-    1.25  0.110 / 0.400
G09     176.1          31.2                5.9 +/-    0.90      10.0 +/-    0.90  0.050 / 0.120
G11     112.9          35.7                6.3 +/-    0.40       9.8 +/-    0.40  0.050 / 0.120
G13     321.1          12.0                0.3 +/-    6.92       0.8 +/-    6.92  0.030 / 0.040
G17     199.6          20.0                5.3 +/-    1.68      11.7 +/-    1.68  0.030 / 0.040
G28     281.6          54.5                5.6 +/-    1.06       6.7 +/-    1.06  0.140 / 0.340
G30     334.8          61.6                3.7 +/-    0.57       4.1 +/-    0.57  0.130 / 0.350