PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-03:57:40
G10     242.9          21.0               18.5 +/-    2.68      39.8 +/-    2.68  0.040 / 0.040
G13     62.8           33.4                9.9 +/-    1.55      16.2 +/-    1.55  0.040 / 0.050
G15     103.7          56.8               12.6 +/-    0.62      14.7 +/-    0.62  0.130 / 0.280
G16     307.9          13.6               11.9 +/-    1.14      30.7 +/-    1.14  0.170 / 0.200
G20     258.5          44.5               14.5 +/-    3.71      19.7 +/-    3.71  0.080 / 0.140
G21     324.7          54.3               11.3 +/-    0.56      13.5 +/-    0.56  0.090 / 0.160
G26     279.5          18.1               15.8 +/-    1.41      36.3 +/-    1.41  0.030 / 0.040
G29     157.9          57.4               14.4 +/-    0.86      16.7 +/-    0.86  0.030 / 0.040