PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-03:43:10
G01     318.2          19.4                8.9 +/-    1.54      19.9 +/-    1.54  0.020 / 0.020
G08     254.3          12.3               10.7 +/-    4.28      28.5 +/-    4.28  0.020 / 0.020
G10     81.3           53.3               10.4 +/-    0.71      12.6 +/-    0.71  0.110 / 0.200
G11     299.9          25.6                8.7 +/-    2.12      16.8 +/-    2.12  0.100 / 0.210
G14     307.6          71.6                8.5 +/-    0.52       9.0 +/-    0.52  0.200 / 0.190
G18     102.6          29.0                8.1 +/-    0.79      14.5 +/-    0.79  0.180 / 0.190
G22     301.2          11.9                5.9 +/-    8.87      15.8 +/-    8.87  0.040 / 0.030
G31     176.4          43.1               10.8 +/-    0.84      14.9 +/-    0.84  0.040 / 0.030
G32     6.6            67.3                8.2 +/-    0.43       8.9 +/-    0.43  0.040 / 0.050