PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-20:12:30
G07     326.4          55.3               13.5 +/-    0.38      16.1 +/-    0.38  0.050 / 0.060
G08     112.1          50.8               15.7 +/-    0.50      19.6 +/-    0.50  0.040 / 0.070
G09     205.2          78.4               14.6 +/-    0.30      14.9 +/-    0.30  0.090 / 0.190
G16     45.7           10.2               10.1 +/-    3.58      28.2 +/-    3.58  0.140 / 0.120
G23     153.1          43.2               14.7 +/-    1.44      20.4 +/-    1.44  0.120 / 0.550
G27     58.6           33.2               11.8 +/-    1.19      19.4 +/-    1.19  0.170 / 0.790
G28     234.4          26.8               16.7 +/-    2.12      31.3 +/-    2.12  0.040 / 0.050
G30     300.4          34.9               12.8 +/-    1.97      20.4 +/-    1.97  0.040 / 0.050