PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-09:12:40
G10     274.4          43.0                5.7 +/-    1.23       7.9 +/-    1.23  0.070 / 0.050
G13     39.2           12.8                1.3 +/-    1.19       3.5 +/-    1.19  0.070 / 0.050
G15     53.0           42.9                3.9 +/-    0.62       5.5 +/-    0.62  0.100 / 0.180
G20     311.1          62.9                4.8 +/-    1.26       5.3 +/-    1.26  0.100 / 0.170
G21     36.5           75.3                5.3 +/-    0.72       5.5 +/-    0.72  0.050 / 0.110
G24     113.3          18.0                6.1 +/-    1.74      14.1 +/-    1.74  0.070 / 0.150
G27     316.6          21.9                1.2 +/-    2.43       2.6 +/-    2.43  0.040 / 0.050
G29     165.6          20.0                5.9 +/-    1.34      13.1 +/-    1.34  0.040 / 0.050
G32     206.2          11.2               -4.7 +/-   30.28     -12.9 +/-   30.28  0.090 / 0.260