PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-01:27:50
G08     263.1          17.0               14.9 +/-    0.76      35.4 +/-    0.76  0.030 / 0.030
G10     64.9           58.0               12.3 +/-    0.75      14.2 +/-    0.75  0.030 / 0.030
G11     308.5          20.2               10.8 +/-    1.96      23.7 +/-    1.96  0.160 / 0.460
G14     276.8          68.9               11.5 +/-    0.58      12.2 +/-    0.58  0.210 / 0.530
G18     94.2           34.9               11.6 +/-    1.18      18.5 +/-    1.18  0.030 / 0.040
G21     154.3          11.6               13.6 +/-    1.82      36.6 +/-    1.82  0.030 / 0.050
G27     228.4          13.6               14.8 +/-    1.97      38.1 +/-    1.97  0.070 / 0.090
G31     179.3          31.5               13.7 +/-    0.84      23.3 +/-    0.84  0.130 / 0.060
G32     337.6          73.3               12.6 +/-    0.40      13.1 +/-    0.40  0.170 / 0.380