PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-17:57:40
G02     220.5          62.4               13.6 +/-    0.94      15.1 +/-    0.94  0.050 / 0.070
G06     48.6           68.4               12.2 +/-    0.31      13.0 +/-    0.31  0.050 / 0.070
G12     321.0          43.8               12.1 +/-    1.65      16.5 +/-    1.65  0.100 / 0.310
G17     61.3           29.2               10.4 +/-    0.58      18.4 +/-    0.58  0.120 / 0.410
G19     41.0           48.8               12.6 +/-    0.60      16.1 +/-    0.60  0.040 / 0.060
G24     257.7          40.5               13.1 +/-    1.11      18.9 +/-    1.11  0.040 / 0.060
G28     125.4          10.5               11.0 +/-    4.82      30.3 +/-    4.82  0.060 / 0.080