PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-19:28:00
G10     254.3          31.3               12.9 +/-    2.03      21.9 +/-    2.03  0.040 / 0.070
G13     49.5           26.2                9.3 +/-    0.59      17.7 +/-    0.59  0.040 / 0.060
G15     78.4           56.6                9.1 +/-    0.90      10.7 +/-    0.90  0.080 / 0.170
G16     291.1          15.6                8.6 +/-    3.55      21.1 +/-    3.55  0.070 / 0.210
G20     277.2          54.3               12.2 +/-    1.36      14.6 +/-    1.36  0.220 / 0.670
G21     338.7          62.3                9.8 +/-    0.85      10.9 +/-    0.85  0.210 / 0.620
G26     264.3          13.8               10.8 +/-    1.17      27.6 +/-    1.17  0.030 / 0.040
G29     164.9          46.1               10.9 +/-    1.06      14.5 +/-    1.06  0.040 / 0.050