PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/14-18:12:40
G02     231.2          70.6                9.2 +/-    0.31       9.7 +/-    0.31  0.240 / 0.400
G05     173.4          12.2                9.3 +/-    6.12      24.8 +/-    6.12  0.230 / 0.420
G06     42.2           62.9                8.6 +/-    0.59       9.5 +/-    0.59  0.030 / 0.040
G12     320.6          45.7                9.2 +/-    0.37      12.3 +/-    0.37  0.030 / 0.040
G17     65.3           27.2                6.6 +/-    1.66      12.3 +/-    1.66  0.110 / 0.180
G19     53.0           40.3                8.9 +/-    1.54      12.9 +/-    1.54  0.100 / 0.190
G24     250.7          37.0                9.9 +/-    1.35      15.1 +/-    1.35  0.040 / 0.120
G28     128.5          9.8                 9.8 +/-    3.18      27.4 +/-    3.18  0.080 / 0.130