PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-16:12:50
G01     73.4           33.2                9.3 +/-    1.08      15.3 +/-    1.08  0.050 / 0.110
G07     136.1          33.2               11.9 +/-    0.98      19.6 +/-    0.98  0.050 / 0.110
G11     55.1           32.1                7.9 +/-    1.12      13.2 +/-    1.12  0.130 / 0.170
G13     277.2          37.8               10.6 +/-    1.35      16.0 +/-    1.35  0.070 / 0.170
G15     306.2          13.7                7.6 +/-    1.61      19.6 +/-    1.61  0.080 / 0.080
G17     229.5          66.3               11.9 +/-    0.92      12.9 +/-    0.92  0.070 / 0.080
G18     50.7           19.2                9.1 +/-    2.98      20.4 +/-    2.98  0.040 / 0.040
G19     222.5          37.3               12.9 +/-    1.28      19.7 +/-    1.28  0.040 / 0.030
G28     15.5           59.8               10.9 +/-    0.71      12.4 +/-    0.71  0.070 / 0.090
G30     133.0          64.5               11.6 +/-    0.38      12.7 +/-    0.38  0.150 / 0.120