PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-19:12:30
G02     219.2          61.9               12.2 +/-    1.18      13.6 +/-    1.18  0.050 / 0.060
G06     50.4           69.9                9.8 +/-    0.48      10.4 +/-    0.48  0.030 / 0.070
G12     320.4          41.8               10.1 +/-    1.68      14.2 +/-    1.68  0.040 / 0.050
G17     59.7           30.8               10.3 +/-    1.31      17.8 +/-    1.31  0.030 / 0.050
G19     40.0           49.3               10.4 +/-    0.74      13.2 +/-    0.74  0.080 / 0.080
G24     259.8          40.9               13.0 +/-    0.96      18.6 +/-    0.96  0.060 / 0.080
G28     124.6          11.4               11.4 +/-    2.66      30.8 +/-    2.66  0.080 / 0.380