PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-14:42:50
G02     213.8          56.6               12.5 +/-    1.20      14.7 +/-    1.20  0.050 / 0.060
G06     69.2           77.8               10.8 +/-    0.46      11.0 +/-    0.46  0.050 / 0.070
G12     317.8          33.3                8.4 +/-    2.06      13.8 +/-    2.06  0.060 / 0.080
G17     57.1           31.8                8.5 +/-    1.40      14.3 +/-    1.40  0.050 / 0.090
G19     38.9           49.3                8.2 +/-    0.68      10.4 +/-    0.68  0.030 / 0.030
G24     271.3          41.8               10.3 +/-    0.59      14.6 +/-    0.59  0.020 / 0.030
G28     121.4          14.9               10.5 +/-    2.06      26.1 +/-    2.06  0.040 / 0.080