PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-20:27:50
G05     48.8           16.9                7.1 +/-    0.71      16.7 +/-    0.71  0.060 / 0.080
G10     236.6          14.7               12.1 +/-    2.58      30.3 +/-    2.58  0.050 / 0.080
G13     73.4           35.2                8.6 +/-    0.44      13.7 +/-    0.44  0.110 / 0.430
G15     123.7          53.1               11.3 +/-    0.83      13.8 +/-    0.83  0.130 / 0.420
G16     313.1          12.9                8.5 +/-    3.34      22.2 +/-    3.34  0.250 / 0.320
G20     249.5          38.1               14.1 +/-    1.56      21.1 +/-    1.56  0.370 / 0.450
G21     313.9          46.8                9.3 +/-    0.81      12.2 +/-    0.81  0.050 / 0.150
G25     199.5          11.1               10.1 +/-    6.00      27.6 +/-    6.00  0.060 / 0.140
G26     286.6          20.1               10.1 +/-    1.02      22.2 +/-    1.02  0.070 / 0.130
G29     153.7          71.6                9.9 +/-    0.61      10.4 +/-    0.61  0.080 / 0.140