PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/12-12:12:40
G08     316.8          14.9                1.7 +/-    2.18       4.4 +/-    2.18  0.270 / 0.180
G10     313.8          56.7                2.8 +/-    1.48       3.3 +/-    1.48  0.160 / 0.170
G14     212.8          21.5                3.5 +/-    2.19       7.5 +/-    2.19  0.080 / 0.030
G15     45.6           19.1                2.3 +/-    2.80       5.1 +/-    2.80  0.070 / 0.050
G20     15.9           63.8                4.0 +/-    0.73       4.4 +/-    0.73  0.040 / 0.020
G21     122.3          61.6                6.1 +/-    0.39       6.8 +/-    0.39  0.040 / 0.030
G24     83.7           28.6                4.5 +/-    1.14       8.1 +/-    1.14  0.080 / 0.080
G27     291.8          36.0                5.1 +/-    0.81       7.9 +/-    0.81  0.090 / 0.100
G32     215.6          38.6                4.4 +/-    1.40       6.5 +/-    1.40  0.170 / 0.260