PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-17:58:00
G05     48.7           18.5                8.2 +/-    1.27      18.8 +/-    1.27  0.070 / 0.140
G10     236.6          12.0               11.6 +/-    4.68      30.9 +/-    4.68  0.070 / 0.120
G13     76.7           37.3               12.5 +/-    0.59      19.1 +/-    0.59  0.090 / 0.210
G15     122.0          52.5               14.2 +/-    0.73      17.4 +/-    0.73  0.090 / 0.200
G18     246.4          43.6               14.3 +/-    1.20      19.7 +/-    1.20  0.070 / 0.080
G20     26.9           66.8               12.1 +/-    0.63      13.0 +/-    0.63  0.050 / 0.080
G21     315.9          49.8               11.7 +/-    1.03      14.7 +/-    1.03  0.030 / 0.050
G26     291.6          18.8               10.5 +/-    1.04      23.8 +/-    1.04  0.030 / 0.040
G29     152.5          65.0               13.6 +/-    0.73      14.8 +/-    0.73  0.050 / 0.120