PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/08-12:28:00
G08     317.2          14.6                1.0 +/-    2.13       2.4 +/-    2.13  0.080 / 0.100
G10     312.7          56.4                2.4 +/-    1.59       2.8 +/-    1.59  0.080 / 0.100
G14     212.6          20.9                2.5 +/-    2.18       5.4 +/-    2.18  0.290 / 0.230
G15     45.6           19.7                2.0 +/-    2.09       4.5 +/-    2.09  0.230 / 0.200
G20     14.5           63.9                3.5 +/-    0.60       3.8 +/-    0.60  0.040 / 0.030
G21     121.5          61.8                5.4 +/-    0.32       6.1 +/-    0.32  0.040 / 0.030
G24     84.3           28.5                3.6 +/-    1.13       6.5 +/-    1.13  0.080 / 0.050
G27     292.6          35.9                4.0 +/-    1.19       6.3 +/-    1.19  0.080 / 0.040
G32     215.2          38.2                3.5 +/-    1.46       5.2 +/-    1.46  0.190 / 0.290