PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-13:57:50
G02     237.4          72.7                6.6 +/-    0.60       6.9 +/-    0.60  0.070 / 0.090
G05     173.7          13.5                8.6 +/-    2.27      22.1 +/-    2.27  0.080 / 0.080
G06     40.9           58.7                6.7 +/-    0.47       7.7 +/-    0.47  0.060 / 0.110
G12     321.4          51.2                6.2 +/-    1.20       7.7 +/-    1.20  0.050 / 0.080
G17     68.2           24.8                6.6 +/-    1.74      12.9 +/-    1.74  0.050 / 0.060
G19     56.6           37.7                7.1 +/-    1.36      10.7 +/-    1.36  0.070 / 0.060
G24     248.2          35.4                8.6 +/-    1.19      13.5 +/-    1.19  0.030 / 0.030