PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-14:42:40
G02     225.9          64.4                8.6 +/-    0.86       9.5 +/-    0.86  0.060 / 0.060
G06     44.2           64.9                8.1 +/-    0.48       8.8 +/-    0.48  0.050 / 0.080
G12     321.7          47.7                7.9 +/-    0.47      10.3 +/-    0.47  0.040 / 0.040
G17     65.5           25.6                8.2 +/-    1.72      15.8 +/-    1.72  0.040 / 0.030
G19     44.5           47.2                7.5 +/-    0.76       9.8 +/-    0.76  0.030 / 0.020
G24     250.6          38.6                9.7 +/-    2.27      14.4 +/-    2.27  0.030 / 0.030