PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-23:12:30
G02     326.2          80.6                9.0 +/-    0.34       9.1 +/-    0.34  0.080 / 0.190
G05     165.1          30.0               15.3 +/-    1.03      26.8 +/-    1.03  0.080 / 0.160
G06     39.8           46.1                9.0 +/-    0.55      11.9 +/-    0.55  0.050 / 0.060
G12     317.0          64.0               10.5 +/-    1.47      11.6 +/-    1.47  0.050 / 0.060
G17     82.3           13.7               10.2 +/-    1.46      26.2 +/-    1.46  0.060 / 0.090
G19     71.1           29.1               10.4 +/-    0.84      18.5 +/-    0.84  0.060 / 0.130
G24     230.9          25.3               12.9 +/-    1.71      25.0 +/-    1.71  0.030 / 0.050
G25     317.4          25.2               10.3 +/-    3.61      20.1 +/-    3.61  0.030 / 0.040