PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/05-18:28:00
G02     203.7          33.5               15.4 +/-    1.52      25.1 +/-    1.52  0.110 / 0.260
G03     57.4           9.1                11.3 +/-    2.65      32.0 +/-    2.65  0.100 / 0.250
G06     155.1          70.2               14.6 +/-    0.85      15.4 +/-    0.85  0.080 / 0.110
G12     308.4          17.7               11.9 +/-    1.52      27.7 +/-    1.52  0.070 / 0.100
G17     35.4           49.8               11.5 +/-    0.96      14.6 +/-    0.96  0.030 / 0.030
G19     354.6          66.3               12.5 +/-    0.35      13.5 +/-    0.35  0.030 / 0.030
G24     297.0          38.8               13.1 +/-    3.17      19.4 +/-    3.17  0.040 / 0.040
G28     102.5          31.2               12.9 +/-    1.14      22.1 +/-    1.14  0.040 / 0.030