PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-20:12:30
G10     252.6          30.0               10.3 +/-    0.84      18.1 +/-    0.84  0.040 / 0.060
G13     51.0           27.4                8.8 +/-    1.50      16.3 +/-    1.50  0.040 / 0.060
G15     83.4           57.7               10.3 +/-    0.37      12.0 +/-    0.37  0.070 / 0.170
G16     293.1          15.7                6.3 +/-    3.57      15.4 +/-    3.57  0.080 / 0.170
G20     274.1          52.9               11.4 +/-    0.52      13.9 +/-    0.52  0.020 / 0.040
G21     336.1          61.0               10.7 +/-    0.52      12.0 +/-    0.52  0.030 / 0.050
G26     266.0          14.6                9.3 +/-    1.28      23.4 +/-    1.28  0.160 / 0.820
G29     164.3          48.0               11.2 +/-    1.58      14.4 +/-    1.58  0.150 / 0.680