PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-03:58:00
G10     242.9          21.0               17.9 +/-    1.60      38.4 +/-    1.60  0.090 / 0.140
G13     62.8           33.4               10.3 +/-    0.64      16.9 +/-    0.64  0.110 / 0.190
G15     103.7          56.8               12.4 +/-    1.41      14.5 +/-    1.41  0.050 / 0.070
G16     307.9          13.6               12.3 +/-    1.96      31.5 +/-    1.96  0.040 / 0.050
G20     258.5          44.5               11.8 +/-    1.14      16.0 +/-    1.14  0.070 / 0.120
G21     324.7          54.3               12.0 +/-    1.53      14.3 +/-    1.53  0.080 / 0.120
G26     279.5          18.1               15.1 +/-    1.36      34.7 +/-    1.36  0.020 / 0.050
G29     157.9          57.4               13.0 +/-    0.88      15.2 +/-    0.88  0.030 / 0.050