PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-21:13:10
G10     272.1          41.2               12.9 +/-    1.22      18.4 +/-    1.22  0.120 / 0.230
G13     39.9           14.5                9.4 +/-    1.89      23.7 +/-    1.89  0.120 / 0.200
G15     58.2           50.3               12.3 +/-    0.56      15.4 +/-    0.56  0.050 / 0.050
G16     274.2          10.6               10.6 +/-    3.38      29.2 +/-    3.38  0.050 / 0.050
G20     306.5          62.1               11.4 +/-    0.95      12.7 +/-    0.95  0.120 / 0.650
G21     15.6           74.4               13.7 +/-    0.76      14.2 +/-    0.76  0.120 / 0.750
G24     114.1          17.0               14.6 +/-    1.30      34.5 +/-    1.30  0.130 / 0.320
G27     317.0          21.4               10.6 +/-    4.36      22.5 +/-    4.36  0.100 / 0.260
G29     168.4          27.0               14.8 +/-    0.88      27.7 +/-    0.88  0.110 / 0.440
G32     204.7          14.2               15.2 +/-    1.14      38.6 +/-    1.14  0.110 / 0.410