PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-13:42:40
G08     293.5          23.7                2.5 +/-    1.30       5.1 +/-    1.30  0.080 / 0.120
G10     5.2            62.8                2.3 +/-    0.63       2.5 +/-    0.63  0.090 / 0.100
G14     228.0          45.7                2.8 +/-    1.74       3.8 +/-    1.74  0.030 / 0.040
G18     317.4          11.8                0.3 +/-   18.55       0.8 +/-   18.55  0.050 / 0.040
G20     63.0           53.0                3.3 +/-    0.72       4.0 +/-    0.72  0.050 / 0.110
G21     144.7          36.6                4.5 +/-    1.11       6.9 +/-    1.11  0.050 / 0.090
G24     55.4           24.3                2.6 +/-    0.60       5.1 +/-    0.60  0.070 / 0.090
G27     259.5          32.7                3.5 +/-    1.33       5.8 +/-    1.33  0.060 / 0.080
G32     240.4          63.5                3.8 +/-    0.65       4.2 +/-    0.65  0.090 / 0.190