PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-23:27:50
G01     40.3           15.0               10.5 +/-    3.25      26.2 +/-    3.25  0.130 / 0.250
G02     198.9          11.2                7.3 +/-   23.65      19.8 +/-   23.65  0.080 / 0.210
G06     174.6          41.3               16.9 +/-    0.89      24.1 +/-    0.89  0.190 / 0.410
G13     236.4          20.7               15.7 +/-    3.55      34.0 +/-    3.55  0.100 / 0.360
G15     268.8          11.6               15.0 +/-    1.54      40.3 +/-    1.54  0.230 / 0.290
G17     353.8          71.3               13.4 +/-    0.44      14.1 +/-    0.44  0.350 / 0.440
G19     282.3          69.5               13.7 +/-    0.57      14.5 +/-    0.57  0.080 / 0.060
G24     316.0          20.7               10.3 +/-    3.31      22.3 +/-    3.31  0.070 / 0.060
G28     74.7           45.5               13.8 +/-    1.06      18.5 +/-    1.06  0.100 / 0.150
G30     154.5          23.7               18.5 +/-    1.54      37.4 +/-    1.54  0.120 / 0.150