PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-19:12:30
G02     62.0           31.4                9.3 +/-    1.27      15.8 +/-    1.27  0.070 / 0.120
G05     52.7           57.6                9.3 +/-    1.00      10.8 +/-    1.00  0.060 / 0.130
G12     183.5          28.3               12.1 +/-    1.65      22.0 +/-    1.65  0.050 / 0.080
G13     122.8          18.1               12.3 +/-    2.57      28.4 +/-    2.57  0.040 / 0.080
G15     161.5          16.1               14.7 +/-    1.28      35.7 +/-    1.28  0.070 / 0.110
G21     275.3          19.4               10.4 +/-    1.62      23.2 +/-    1.62  0.060 / 0.120
G25     231.4          48.8               10.7 +/-    1.61      13.7 +/-    1.61  0.090 / 0.250
G29     332.1          59.1                8.7 +/-    0.58      10.0 +/-    0.58  0.110 / 0.260