PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-16:42:50
G02     200.7          17.0               11.8 +/-    1.68      28.0 +/-    1.68  0.100 / 0.210
G06     169.3          53.1               13.0 +/-    1.45      15.8 +/-    1.45  0.080 / 0.160
G13     228.6          14.5               10.3 +/-    3.60      25.9 +/-    3.60  0.040 / 0.090
G17     19.5           61.4                9.1 +/-    0.39      10.2 +/-    0.39  0.050 / 0.090
G19     305.5          70.3                9.5 +/-    0.70      10.0 +/-    0.70  0.090 / 0.170
G24     310.7          29.2                7.4 +/-    1.17      13.2 +/-    1.17  0.070 / 0.180
G28     85.4           41.0                9.9 +/-    0.30      14.2 +/-    0.30  0.080 / 0.170
G30     157.2          17.5               11.5 +/-    1.67      26.9 +/-    1.67  0.090 / 0.150