PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-17:58:00
G10     271.4          40.1               13.3 +/-    1.30      19.3 +/-    1.30  0.110 / 0.150
G13     40.6           16.2               10.9 +/-    1.99      26.2 +/-    1.99  0.080 / 0.120
G15     54.5           44.4               11.5 +/-    0.64      15.6 +/-    0.64  0.050 / 0.110
G18     313.6          66.3               10.9 +/-    0.96      11.8 +/-    0.96  0.040 / 0.120
G20     56.7           33.1                9.4 +/-    0.75      15.4 +/-    0.75  0.040 / 0.040
G21     30.7           74.9               12.0 +/-    0.47      12.4 +/-    0.47  0.040 / 0.040
G24     118.0          16.4               15.4 +/-    1.20      37.1 +/-    1.20  0.090 / 0.210
G27     315.7          23.3                8.5 +/-    2.28      17.2 +/-    2.28  0.080 / 0.170
G29     166.0          21.7               14.3 +/-    1.20      30.3 +/-    1.20  0.260 / 0.360
G32     205.6          11.5               -4.4 +/-   45.22     -11.8 +/-   45.22  0.110 / 0.280