PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/09-11:57:30
G10     294.4          51.2                5.7 +/-    2.17       7.1 +/-    2.17  0.120 / 0.070
G15     46.5           30.0                3.2 +/-    1.08       5.6 +/-    1.08  0.080 / 0.030
G20     346.9          65.4                6.1 +/-    0.75       6.6 +/-    0.75  0.030 / 0.030
G21     98.3           70.7                6.9 +/-    0.58       7.3 +/-    0.58  0.030 / 0.030
G24     97.4           25.3                6.9 +/-    1.16      13.5 +/-    1.16  0.080 / 0.140
G27     305.3          31.3                5.9 +/-    1.43      10.1 +/-    1.43  0.070 / 0.120
G32     210.0          26.7                4.6 +/-    0.97       8.6 +/-    0.97  0.080 / 0.090