PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-18:12:30
G02     200.4          17.8               11.2 +/-    1.55      26.1 +/-    1.55  0.110 / 0.210
G06     169.8          52.8               14.1 +/-    0.85      17.3 +/-    0.85  0.130 / 0.190
G13     228.7          14.5               12.0 +/-    2.63      30.2 +/-    2.63  0.080 / 0.110
G17     17.7           62.2               11.4 +/-    0.64      12.7 +/-    0.64  0.090 / 0.110
G19     307.1          70.5               11.1 +/-    0.77      11.7 +/-    0.77  0.040 / 0.040
G24     310.9          28.9               10.3 +/-    1.50      18.5 +/-    1.50  0.050 / 0.030
G28     85.5           40.9               12.0 +/-    1.24      17.1 +/-    1.24  0.040 / 0.030
G30     157.0          17.0               13.0 +/-    1.31      30.8 +/-    1.31  0.030 / 0.030