PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-19:13:00
G10     273.1          41.8               10.1 +/-    1.55      14.3 +/-    1.55  0.110 / 0.180
G13     39.6           13.8                8.9 +/-    1.43      22.7 +/-    1.43  0.110 / 0.130
G15     56.3           48.1                9.9 +/-    0.37      12.8 +/-    0.37  0.040 / 0.050
G16     274.0          10.3                5.5 +/-    3.76      15.2 +/-    3.76  0.040 / 0.050
G20     308.4          62.5                9.9 +/-    1.36      11.0 +/-    1.36  0.100 / 0.490
G21     21.6           74.9               11.7 +/-    0.98      12.0 +/-    0.98  0.090 / 0.610
G24     112.6          17.6               11.1 +/-    1.05      25.8 +/-    1.05  0.110 / 0.270
G27     316.7          21.7                6.5 +/-    2.42      13.8 +/-    2.42  0.100 / 0.250
G29     168.2          25.7               11.3 +/-    2.60      21.7 +/-    2.60  0.080 / 0.280
G32     205.0          14.5               10.8 +/-    4.29      27.1 +/-    4.29  0.080 / 0.240