PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-10:12:40
G08     317.5          14.3                2.5 +/-    1.32       6.3 +/-    1.32  0.070 / 0.160
G10     313.0          56.5                2.8 +/-    0.69       3.3 +/-    0.69  0.080 / 0.180
G14     212.6          21.0                5.2 +/-    1.52      11.1 +/-    1.52  0.030 / 0.040
G15     45.6           19.1                2.8 +/-    1.09       6.2 +/-    1.09  0.040 / 0.040
G20     14.8           63.9                3.9 +/-    0.52       4.3 +/-    0.52  0.070 / 0.080
G21     120.7          63.7                7.1 +/-    0.97       7.8 +/-    0.97  0.060 / 0.070
G24     85.2           28.7                4.8 +/-    0.91       8.6 +/-    0.91  0.150 / 0.310
G27     292.0          36.2                5.4 +/-    1.55       8.4 +/-    1.55  0.110 / 0.360
G32     215.4          36.9                7.6 +/-    2.71      11.7 +/-    2.71  0.040 / 0.040