PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-20:58:00
G10     299.8          52.2               13.3 +/-    0.56      16.3 +/-    0.56  0.070 / 0.080
G14     210.7          15.1               19.5 +/-    1.84      48.4 +/-    1.84  0.070 / 0.070
G15     45.7           25.9               11.7 +/-    0.95      22.5 +/-    0.95  0.030 / 0.050
G18     4.9            65.5               12.7 +/-    0.72      13.8 +/-    0.72  0.030 / 0.050
G20     72.9           17.0               12.2 +/-    1.42      28.9 +/-    1.42  0.070 / 0.160
G21     106.6          70.2               14.1 +/-    1.06      14.9 +/-    1.06  0.070 / 0.130
G24     96.6           27.4               15.4 +/-    1.44      28.5 +/-    1.44  0.100 / 0.360
G27     296.2          36.0               13.6 +/-    1.51      21.2 +/-    1.51  0.120 / 0.400
G32     212.4          31.5               15.3 +/-    1.35      26.1 +/-    1.35  0.050 / 0.090