PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-17:27:40
G02     201.4          22.7               15.8 +/-    1.75      32.5 +/-    1.75  0.160 / 0.230
G06     166.4          59.1               14.3 +/-    0.76      16.4 +/-    0.76  0.170 / 0.270
G13     224.6          10.8               15.4 +/-   14.51      42.2 +/-   14.51  0.090 / 0.110
G17     25.3           57.3               11.7 +/-    0.78      13.6 +/-    0.78  0.120 / 0.100
G19     324.5          70.1               11.9 +/-    0.54      12.6 +/-    0.54  0.040 / 0.030
G24     306.8          32.9               10.8 +/-    1.45      17.9 +/-    1.45  0.050 / 0.030
G28     91.7           37.8               12.6 +/-    0.82      19.0 +/-    0.82  0.240 / 0.450
G30     157.8          12.1               12.4 +/-    2.18      33.1 +/-    2.18  0.350 / 0.650