PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-00:13:10
G08     283.9          23.1               10.7 +/-    1.72      21.8 +/-    1.72  0.040 / 0.030
G10     21.9           63.2               11.0 +/-    0.75      12.2 +/-    0.75  0.030 / 0.030
G14     238.3          54.5               13.9 +/-    2.71      16.6 +/-    2.71  0.060 / 0.120
G18     72.5           47.2               10.3 +/-    0.90      13.5 +/-    0.90  0.050 / 0.120
G21     149.1          31.4               11.7 +/-    1.00      19.9 +/-    1.00  0.130 / 0.240
G24     50.9           23.1                8.6 +/-    2.69      17.6 +/-    2.69  0.110 / 0.210
G27     245.2          27.1               12.5 +/-    2.23      23.2 +/-    2.23  0.100 / 0.120
G31     183.6          11.1                1.4 +/-   30.83       3.7 +/-   30.83  0.110 / 0.110
G32     260.2          70.2               10.8 +/-    0.65      11.4 +/-    0.65  0.080 / 0.070