PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/29-18:42:30
G10     252.7          30.1               12.4 +/-    2.09      21.6 +/-    2.09  0.040 / 0.060
G13     50.9           27.3                9.7 +/-    3.08      18.0 +/-    3.08  0.040 / 0.040
G15     81.0           56.8               12.2 +/-    1.12      14.2 +/-    1.12  0.130 / 0.370
G16     292.8          15.8                7.6 +/-    2.47      18.5 +/-    2.47  0.120 / 0.460
G20     274.7          53.5               11.5 +/-    3.06      13.9 +/-    3.06  0.110 / 0.150
G21     336.4          61.1               12.4 +/-    0.65      14.0 +/-    0.65  0.100 / 0.140
G26     265.9          14.6                9.9 +/-    3.01      24.8 +/-    3.01  0.030 / 0.040
G29     164.4          48.3               14.5 +/-    0.77      18.7 +/-    0.77  0.030 / 0.040