PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-12:13:10
G08     318.6          12.5                1.7 +/-    2.24       4.5 +/-    2.24  0.030 / 0.050
G10     314.9          56.6                1.4 +/-    0.68       1.7 +/-    0.68  0.030 / 0.050
G14     214.3          20.6                4.2 +/-    1.68       9.0 +/-    1.68  0.050 / 0.080
G15     45.6           16.9                2.4 +/-    0.72       5.7 +/-    0.72  0.050 / 0.060
G20     77.5           16.1                2.4 +/-    1.22       5.8 +/-    1.22  0.110 / 0.480
G21     123.5          63.5                6.4 +/-    0.72       7.1 +/-    0.72  0.110 / 0.520
G24     85.3           29.8                3.9 +/-    0.97       6.9 +/-    0.97  0.110 / 0.210
G27     285.6          37.8                4.1 +/-    0.96       6.1 +/-    0.96  0.080 / 0.230
G32     216.6          44.3                6.6 +/-    1.73       9.0 +/-    1.73  0.160 / 0.280