PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-12:28:00
G08     320.3          11.0               -7.5 +/-   26.66     -20.6 +/-   26.66  0.060 / 0.070
G10     310.0          55.3                2.8 +/-    1.99       3.3 +/-    1.99  0.040 / 0.050
G14     213.2          18.1                2.7 +/-    1.40       6.3 +/-    1.40  0.150 / 0.370
G15     45.5           19.3                3.6 +/-    2.29       8.1 +/-    2.29  0.170 / 0.310
G20     75.5           17.7                3.3 +/-    2.08       7.8 +/-    2.08  0.120 / 0.210
G21     119.0          65.8                5.5 +/-    0.73       5.9 +/-    0.73  0.080 / 0.210
G24     88.8           29.2                4.3 +/-    2.22       7.7 +/-    2.22  0.030 / 0.030
G27     289.3          37.4                3.0 +/-    1.78       4.5 +/-    1.78  0.030 / 0.040
G32     214.8          41.2                5.4 +/-    1.28       7.7 +/-    1.28  0.080 / 0.070