PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-00:27:50
G02     241.9          76.7               10.1 +/-    0.44      10.4 +/-    0.44  0.040 / 0.060
G05     170.8          16.8               15.0 +/-    1.02      35.6 +/-    1.02  0.050 / 0.060
G06     40.8           58.4                8.7 +/-    0.72      10.0 +/-    0.72  0.080 / 0.160
G12     321.6          51.7               11.1 +/-    1.36      13.7 +/-    1.36  0.050 / 0.130
G17     68.8           25.9                9.9 +/-    0.68      19.0 +/-    0.68  0.090 / 0.130
G19     56.0           39.8                9.8 +/-    0.61      14.4 +/-    0.61  0.090 / 0.100
G24     245.6          35.0               13.2 +/-    0.74      20.9 +/-    0.74  0.160 / 0.380
G25     316.6          11.3               -5.0 +/-   36.53     -13.5 +/-   36.53  0.240 / 0.430