PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-22:57:30
G01     320.7          11.7               -1.0 +/-   34.50      -2.8 +/-   34.50  0.250 / 0.450
G08     263.1          16.7               13.1 +/-    1.26      31.2 +/-    1.26  0.130 / 0.450
G10     66.2           57.7               11.5 +/-    0.54      13.3 +/-    0.54  0.080 / 0.110
G11     308.7          19.9               11.9 +/-    1.55      26.3 +/-    1.55  0.060 / 0.100
G14     277.6          68.9               12.4 +/-    0.82      13.2 +/-    0.82  0.150 / 0.340
G18     95.3           33.6               12.1 +/-    0.57      19.8 +/-    0.57  0.130 / 0.380
G27     228.0          13.2               14.9 +/-    2.83      38.7 +/-    2.83  0.030 / 0.030
G31     180.8          30.4               15.9 +/-    1.13      27.6 +/-    1.13  0.030 / 0.030
G32     339.4          73.1               12.2 +/-    0.60      12.7 +/-    0.60  0.050 / 0.050