PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-11:57:20
G10     303.2          53.4                2.6 +/-    0.68       3.1 +/-    0.68  0.060 / 0.060
G14     211.8          14.0                1.2 +/-    1.75       3.0 +/-    1.75  0.050 / 0.080
G15     45.5           23.1                1.9 +/-    2.02       3.8 +/-    2.02  0.150 / 0.410
G20     72.2           20.7                2.8 +/-    1.44       6.1 +/-    1.44  0.230 / 0.520
G21     110.4          69.5                4.7 +/-    0.40       5.0 +/-    0.40  0.030 / 0.030
G24     93.6           28.0                2.7 +/-    2.61       5.0 +/-    2.61  0.030 / 0.030
G27     294.6          36.3                3.8 +/-    1.70       5.9 +/-    1.70  0.130 / 0.200
G32     212.5          37.1                4.2 +/-    1.50       6.4 +/-    1.50  0.120 / 0.180