PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-22:58:10
G02     289.0          81.5               12.0 +/-    0.77      12.1 +/-    0.77  0.040 / 0.040
G05     167.3          25.4               17.3 +/-    1.55      33.5 +/-    1.55  0.030 / 0.030
G06     40.2           48.1               11.6 +/-    1.02      15.0 +/-    1.02  0.070 / 0.170
G12     319.9          62.8               12.5 +/-    0.84      13.9 +/-    0.84  0.080 / 0.190
G17     77.6           18.9               11.5 +/-    1.90      26.1 +/-    1.90  0.110 / 0.120
G19     65.3           34.3               13.8 +/-    1.50      22.2 +/-    1.50  0.080 / 0.130
G24     235.6          28.9               16.2 +/-    1.04      29.0 +/-    1.04  0.150 / 0.260
G25     317.7          20.0               11.1 +/-    1.66      24.6 +/-    1.66  0.230 / 0.210