PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-14:43:10
G03     187.7          14.2                9.3 +/-    2.64      23.6 +/-    2.64  0.080 / 0.130
G07     297.2          41.1               11.2 +/-    1.10      16.0 +/-    1.10  0.080 / 0.130
G08     138.2          33.3               13.9 +/-    0.58      22.8 +/-    0.58  0.040 / 0.070
G09     317.5          70.4               10.0 +/-    0.82      10.6 +/-    0.82  0.040 / 0.070
G16     41.7           30.3                7.7 +/-    0.38      13.3 +/-    0.38  0.170 / 0.380
G23     133.8          68.4               12.8 +/-    0.51      13.6 +/-    0.51  0.110 / 0.270
G27     90.4           36.1               11.4 +/-    0.57      17.7 +/-    0.57  0.040 / 0.040
G30     279.3          17.2               12.4 +/-    3.16      29.2 +/-    3.16  0.030 / 0.040