PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-18:28:00
G05     46.8           23.0                7.3 +/-    0.68      14.9 +/-    0.68  0.060 / 0.140
G10     232.8          10.2              -18.0 +/-   14.56     -50.0 +/-   14.56  0.060 / 0.120
G13     81.2           35.3                9.7 +/-    0.57      15.3 +/-    0.57  0.060 / 0.090
G15     132.0          48.9               11.3 +/-    1.43      14.5 +/-    1.43  0.050 / 0.080
G16     317.8          10.7                0.9 +/-   21.40       2.6 +/-   21.40  0.050 / 0.130
G20     244.3          34.2               13.3 +/-    1.23      21.4 +/-    1.23  0.050 / 0.140
G21     308.4          42.9                9.4 +/-    0.80      13.0 +/-    0.80  0.150 / 0.660
G25     202.6          15.9               12.7 +/-    2.54      31.0 +/-    2.54  0.130 / 0.610
G26     292.7          20.2               10.2 +/-    2.10      22.4 +/-    2.10  0.030 / 0.040
G29     145.8          79.0               10.3 +/-    1.60      10.5 +/-    1.60  0.050 / 0.060