PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-12:27:50
G08     320.3          11.0               -6.9 +/-   28.31     -18.9 +/-   28.31  0.050 / 0.090
G10     310.0          55.3                2.2 +/-    0.67       2.7 +/-    0.67  0.060 / 0.070
G14     213.2          18.1                4.5 +/-    2.16      10.4 +/-    2.16  0.080 / 0.210
G15     45.5           19.3                2.4 +/-    0.72       5.4 +/-    0.72  0.080 / 0.190
G20     75.5           17.7                2.9 +/-    0.98       6.7 +/-    0.98  0.110 / 0.450
G21     119.0          65.8                3.7 +/-    0.94       4.1 +/-    0.94  0.100 / 0.500
G24     88.8           29.2                3.1 +/-    0.69       5.5 +/-    0.69  0.030 / 0.040
G27     289.3          37.4                3.7 +/-    1.00       5.6 +/-    1.00  0.030 / 0.050
G32     214.8          41.2                6.2 +/-    1.28       8.9 +/-    1.28  0.040 / 0.040