PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-21:12:20
G02     201.4          28.7               13.0 +/-    1.83      23.4 +/-    1.83  0.050 / 0.090
G06     169.2          60.8               12.7 +/-    0.69      14.3 +/-    0.69  0.050 / 0.090
G17     30.2           53.7               10.5 +/-    0.88      12.7 +/-    0.88  0.100 / 0.120
G19     347.6          68.5                9.9 +/-    0.78      10.5 +/-    0.78  0.080 / 0.110
G24     303.2          35.3               10.5 +/-    1.25      16.6 +/-    1.25  0.040 / 0.030
G28     93.4           39.0               10.7 +/-    1.11      15.8 +/-    1.11  0.040 / 0.030