PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-20:28:00
G10     245.8          24.3               16.9 +/-    2.46      33.6 +/-    2.46  0.050 / 0.060
G13     58.4           31.5               14.2 +/-    0.59      24.1 +/-    0.59  0.050 / 0.080
G15     99.7           58.1               16.8 +/-    0.27      19.4 +/-    0.27  0.150 / 0.650
G16     301.1          15.6               12.6 +/-    2.96      30.9 +/-    2.96  0.150 / 0.720
G20     263.3          47.6               17.3 +/-    0.65      22.5 +/-    0.65  0.050 / 0.120
G21     326.8          55.4               15.2 +/-    0.73      18.0 +/-    0.73  0.070 / 0.140
G26     273.6          17.5               15.7 +/-    1.14      36.7 +/-    1.14  0.040 / 0.070
G29     161.5          56.9               17.1 +/-    0.69      20.0 +/-    0.69  0.030 / 0.050