PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/03-18:28:10
G02     202.8          30.3               13.5 +/-    2.37      23.5 +/-    2.37  0.100 / 0.160
G06     160.1          66.8               11.8 +/-    0.98      12.7 +/-    0.98  0.100 / 0.180
G12     306.6          15.2                9.9 +/-    3.48      24.6 +/-    3.48  0.080 / 0.440
G17     32.1           52.3               10.3 +/-    0.63      12.7 +/-    0.63  0.100 / 0.440
G19     346.6          67.8               10.0 +/-    0.82      10.7 +/-    0.82  0.060 / 0.110
G24     300.4          37.2               12.4 +/-    1.19      18.9 +/-    1.19  0.070 / 0.080
G28     99.3           33.3               10.6 +/-    0.33      17.4 +/-    0.33  0.050 / 0.140