PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-13:27:50
G08     320.2          11.1               -4.8 +/-   28.16     -13.1 +/-   28.16  0.130 / 0.270
G10     308.9          55.0                2.6 +/-    0.60       3.1 +/-    0.60  0.080 / 0.380
G14     212.9          17.9                3.6 +/-    1.26       8.2 +/-    1.26  0.050 / 0.060
G15     45.4           19.8                2.4 +/-    0.66       5.4 +/-    0.66  0.060 / 0.070
G20     75.3           17.4                2.9 +/-    0.88       6.8 +/-    0.88  0.100 / 0.230
G21     118.2          65.7                5.1 +/-    0.72       5.6 +/-    0.72  0.090 / 0.270
G24     89.6           29.1                3.7 +/-    0.85       6.6 +/-    0.85  0.060 / 0.100
G27     290.0          37.3                5.2 +/-    1.15       7.9 +/-    1.15  0.060 / 0.120
G32     214.5          40.3                7.5 +/-    0.66      10.9 +/-    0.66  0.150 / 0.300