PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-12:12:40
G02     240.4          75.0                4.9 +/-    0.34       5.1 +/-    0.34  0.270 / 0.390
G05     174.4          13.3                3.8 +/-    2.26       9.8 +/-    2.26  0.240 / 0.350
G06     40.6           58.0                4.9 +/-    0.91       5.6 +/-    0.91  0.040 / 0.040
G12     321.8          53.0                4.3 +/-    0.78       5.3 +/-    0.78  0.040 / 0.030
G17     69.2           23.5                3.6 +/-    2.08       7.4 +/-    2.08  0.060 / 0.070
G19     57.3           37.2                4.1 +/-    0.96       6.3 +/-    0.96  0.090 / 0.090
G24     247.8          35.0                7.9 +/-    1.59      12.5 +/-    1.59  0.070 / 0.060
G25     316.0          10.8              -14.8 +/-   21.48     -40.6 +/-   21.48  0.060 / 0.060