PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-18:13:10
G01     126.6          12.1               18.3 +/-    3.00      48.6 +/-    3.00  0.030 / 0.050
G07     53.3           69.7               14.9 +/-    0.32      15.8 +/-    0.32  0.050 / 0.050
G08     51.5           41.7               13.0 +/-    0.66      18.4 +/-    0.66  0.030 / 0.030
G09     178.4          35.7               16.0 +/-    1.06      25.1 +/-    1.06  0.040 / 0.040
G11     119.0          35.4               17.4 +/-    1.22      27.4 +/-    1.22  0.030 / 0.030
G13     321.1          11.9                8.0 +/-   23.91      21.3 +/-   23.91  0.040 / 0.030
G17     201.2          12.4               11.9 +/-   21.03      31.4 +/-   21.03  0.120 / 0.130
G18     103.7          16.9               15.3 +/-    2.37      36.3 +/-    2.37  0.120 / 0.120
G28     277.7          53.4               14.4 +/-    3.05      17.5 +/-    3.05  0.230 / 0.350
G30     335.5          62.0               14.1 +/-    0.48      15.8 +/-    0.48  0.290 / 0.360