PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-05:57:40
G10     303.8          53.7                4.7 +/-    1.22       5.7 +/-    1.22  0.100 / 0.510
G14     212.2          11.7                2.2 +/-   21.75       5.9 +/-   21.75  0.100 / 0.450
G15     45.7           24.6                3.5 +/-    0.80       6.9 +/-    0.80  0.040 / 0.040
G20     35.9           58.5                4.5 +/-    0.48       5.2 +/-    0.48  0.040 / 0.040
G21     108.0          71.8                5.8 +/-    0.71       6.1 +/-    0.71  0.060 / 0.080
G24     92.4           27.9                5.1 +/-    1.60       9.3 +/-    1.60  0.060 / 0.110
G27     295.2          36.0                6.7 +/-    0.50      10.4 +/-    0.50  0.050 / 0.040
G32     212.3          38.1                8.5 +/-    1.15      12.8 +/-    1.15  0.050 / 0.040