PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-07:43:00
G10     293.9          51.2                4.7 +/-    2.14       5.9 +/-    2.14  0.040 / 0.030
G15     46.5           29.6                3.0 +/-    1.14       5.4 +/-    1.14  0.040 / 0.030
G20     345.7          65.4                3.7 +/-    0.99       4.0 +/-    0.99  0.080 / 0.160
G21     90.5           73.9                4.6 +/-    0.35       4.8 +/-    0.35  0.080 / 0.190
G24     99.6           25.2                7.7 +/-    0.75      15.0 +/-    0.75  0.090 / 0.070
G27     305.2          31.7                3.5 +/-    0.99       5.9 +/-    0.99  0.100 / 0.060
G32     210.3          23.7                7.0 +/-    1.52      14.0 +/-    1.52  0.060 / 0.090