PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-23:43:10
G01     122.6          15.3               13.4 +/-    2.21      33.1 +/-    2.21  0.110 / 0.230
G07     68.5           68.4               10.0 +/-    1.07      10.7 +/-    1.07  0.080 / 0.260
G08     47.9           37.2                7.9 +/-    0.78      12.0 +/-    0.78  0.050 / 0.060
G09     178.3          31.3               13.0 +/-    1.14      22.2 +/-    1.14  0.050 / 0.060
G11     115.6          37.7               12.7 +/-    0.78      19.3 +/-    0.78  0.040 / 0.060
G13     319.8          15.4                6.7 +/-    2.06      16.6 +/-    2.06  0.040 / 0.070
G17     201.4          18.9               12.9 +/-    2.27      29.0 +/-    2.27  0.130 / 0.220
G28     286.4          56.0                9.6 +/-    0.75      11.4 +/-    0.75  0.120 / 0.220
G30     349.0          68.2                9.0 +/-    0.79       9.7 +/-    0.79  0.120 / 0.610