PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-12:43:00
G10     297.6          51.6                5.1 +/-    0.83       6.3 +/-    0.83  0.090 / 0.080
G14     210.7          11.0               -6.8 +/-   15.32     -18.4 +/-   15.32  0.140 / 0.120
G15     45.8           26.3                3.0 +/-    1.03       5.7 +/-    1.03  0.060 / 0.190
G20     69.7           22.5                2.2 +/-    1.05       4.5 +/-    1.05  0.060 / 0.250
G21     102.1          71.6                3.2 +/-    0.94       3.4 +/-    0.94  0.030 / 0.050
G24     97.8           26.7                6.4 +/-    1.13      12.0 +/-    1.13  0.030 / 0.040
G27     298.8          35.0                4.6 +/-    1.15       7.2 +/-    1.15  0.250 / 0.440
G32     210.9          33.1                4.3 +/-    2.62       7.1 +/-    2.62  0.180 / 0.490