PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/05-19:57:40
G10     246.0          21.8               21.1 +/-    1.92      44.3 +/-    1.92  0.120 / 0.280
G13     60.4           34.1               16.9 +/-    0.65      27.2 +/-    0.65  0.120 / 0.320
G15     97.7           57.5               17.8 +/-    0.49      20.7 +/-    0.49  0.140 / 0.300
G16     305.3          13.4               14.9 +/-    2.59      38.5 +/-    2.59  0.120 / 0.320
G18     261.6          52.8               18.9 +/-    0.76      23.1 +/-    0.76  0.040 / 0.050
G20     38.6           53.6               16.6 +/-    0.44      20.1 +/-    0.44  0.050 / 0.050
G21     329.4          57.9               16.6 +/-    0.59      19.2 +/-    0.59  0.050 / 0.120
G26     277.8          16.9               16.4 +/-    1.42      39.0 +/-    1.42  0.040 / 0.120
G29     160.6          51.1               19.2 +/-    0.67      23.9 +/-    0.67  0.030 / 0.060