PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-15:42:50
G02     202.6          26.0               12.6 +/-    1.76      24.1 +/-    1.76  0.030 / 0.040
G06     162.1          64.1               14.2 +/-    1.85      15.6 +/-    1.85  0.040 / 0.040
G12     305.4          14.6                7.2 +/-    2.08      18.1 +/-    2.08  0.110 / 0.330
G17     31.3           52.9                8.5 +/-    0.87      10.4 +/-    0.87  0.110 / 0.380
G19     335.7          69.0               10.1 +/-    0.95      10.8 +/-    0.95  0.080 / 0.100
G24     302.8          36.0               10.3 +/-    1.36      16.0 +/-    1.36  0.100 / 0.110
G28     96.1           35.3                9.8 +/-    0.73      15.5 +/-    0.73  0.040 / 0.040