PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-19:58:00
G10     255.8          31.1                9.6 +/-   13.12      16.5 +/-   13.12  0.120 / 0.580
G13     48.5           26.1               15.2 +/-   35.72      29.0 +/-   35.72  0.120 / 0.480
G15     82.2           59.0                8.5 +/-    2.09       9.8 +/-    2.09  0.050 / 0.050
G16     289.4          15.0               12.8 +/-   37.10      31.8 +/-   37.10  0.040 / 0.060
G20     278.2          54.5                9.8 +/-    3.44      11.8 +/-    3.44  0.070 / 0.240
G21     342.3          64.4                6.8 +/-    3.87       7.4 +/-    3.87  0.070 / 0.210
G26     262.4          13.1               13.2 +/-   35.06      34.5 +/-   35.06  0.030 / 0.050
G29     166.1          43.8               17.5 +/-   35.07      23.9 +/-   35.07  0.020 / 0.050