PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-05:28:10
G03     229.1          64.2                7.5 +/-    1.45       8.2 +/-    1.45  0.060 / 0.040
G07     252.7          12.9                7.4 +/-    3.01      19.5 +/-    3.01  0.050 / 0.040
G09     307.8          25.1                4.5 +/-    1.90       8.8 +/-    1.90  0.170 / 0.280
G16     120.8          63.3                8.1 +/-    0.58       8.9 +/-    0.58  0.260 / 0.220
G22     191.8          49.4                7.7 +/-    0.87       9.8 +/-    0.87  0.050 / 0.040
G23     323.0          52.8                5.5 +/-    0.83       6.7 +/-    0.83  0.040 / 0.040
G26     63.7           51.2                6.2 +/-    1.57       7.7 +/-    1.57  0.160 / 0.150
G31     54.8           17.2                2.6 +/-    2.73       6.1 +/-    2.73  0.200 / 0.190