PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-13:13:10
G08     318.5          12.6                4.6 +/-    2.54      12.0 +/-    2.54  0.040 / 0.060
G10     313.7          56.3                2.3 +/-    1.55       2.7 +/-    1.55  0.050 / 0.060
G14     214.0          20.5                3.4 +/-    2.91       7.4 +/-    2.91  0.030 / 0.030
G15     45.6           17.3                2.4 +/-    1.57       5.7 +/-    1.57  0.030 / 0.030
G20     77.4           15.8                2.5 +/-    1.95       6.1 +/-    1.95  0.100 / 0.230
G21     122.8          63.4                4.4 +/-    0.58       4.8 +/-    0.58  0.080 / 0.250
G24     86.2           29.7                5.3 +/-    1.35       9.4 +/-    1.35  0.220 / 0.300
G27     286.3          37.7                4.7 +/-    1.72       7.1 +/-    1.72  0.190 / 0.250
G32     216.2          43.3                5.9 +/-    0.91       8.2 +/-    0.91  0.180 / 0.230