PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-10:27:50
G03     204.4          45.6                1.1 +/-    3.76       1.4 +/-    3.76  0.030 / 0.040
G07     270.0          26.8                5.5 +/-    2.82      10.3 +/-    2.82  0.030 / 0.040
G08     154.3          10.3              -13.2 +/-   30.09     -36.4 +/-   30.09  0.080 / 0.140
G09     317.3          42.2                7.8 +/-    6.41      11.0 +/-    6.41  0.100 / 0.140
G16     63.3           60.5               25.1 +/-   14.84      28.4 +/-   14.84  0.070 / 0.090
G22     182.9          27.1                6.2 +/-    2.10      11.5 +/-    2.10  0.070 / 0.090
G23     344.1          71.2                4.9 +/-    0.88       5.1 +/-    0.88  0.060 / 0.120
G26     45.7           33.0              -65.0 +/-   73.53    -107.1 +/-   73.53  0.080 / 0.120
G27     121.7          20.5                4.3 +/-    1.60       9.4 +/-    1.60  0.220 / 0.410