PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/21-22:43:10
G10     299.5          52.1               14.2 +/-    0.85      17.4 +/-    0.85  0.070 / 0.140
G14     210.6          15.2               21.0 +/-    1.88      52.0 +/-    1.88  0.070 / 0.160
G15     45.8           26.7               11.5 +/-    1.32      21.6 +/-    1.32  0.030 / 0.040
G18     2.9            65.6               14.4 +/-    0.38      15.6 +/-    0.38  0.030 / 0.050
G20     73.1           16.4               12.4 +/-    1.08      29.8 +/-    1.08  0.060 / 0.110
G21     104.8          71.3               16.2 +/-    0.64      17.0 +/-    0.64  0.050 / 0.090
G24     96.8           27.3               17.4 +/-    1.02      32.2 +/-    1.02  0.190 / 0.860
G27     296.4          35.9               15.4 +/-    1.47      24.1 +/-    1.47  0.180 / 0.550
G32     212.3          31.3               17.2 +/-    2.24      29.2 +/-    2.24  0.130 / 0.420