PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-01:12:50
G02     16.1           68.4                7.5 +/-    0.42       8.0 +/-    0.42  0.030 / 0.020
G05     155.8          46.9               13.7 +/-    1.23      18.0 +/-    1.23  0.030 / 0.020
G06     45.9           28.8                6.3 +/-    1.58      11.3 +/-    1.58  0.330 / 0.430
G12     262.3          79.9               11.2 +/-    1.06      11.3 +/-    1.06  0.160 / 0.320
G19     85.6           20.9                9.5 +/-    1.51      20.3 +/-    1.51  0.030 / 0.050
G24     219.3          14.1               14.3 +/-    1.47      36.2 +/-    1.47  0.040 / 0.040
G25     313.4          39.4                9.1 +/-    1.65      13.4 +/-    1.65  0.050 / 0.110
G29     295.0          15.8                8.9 +/-    1.30      21.7 +/-    1.30  0.050 / 0.080