PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-13:43:10
G02     203.1          33.0                9.6 +/-    1.56      15.8 +/-    1.56  0.060 / 0.100
G06     163.9          67.4               10.7 +/-    0.69      11.5 +/-    0.69  0.050 / 0.080
G12     307.3          14.3                5.6 +/-    2.23      14.2 +/-    2.23  0.130 / 0.220
G17     37.8           47.7                6.8 +/-    0.44       8.8 +/-    0.44  0.130 / 0.180
G19     4.7            64.8                6.8 +/-    0.29       7.4 +/-    0.29  0.030 / 0.030
G24     300.5          36.6                6.5 +/-    1.46      10.0 +/-    1.46  0.030 / 0.030
G28     102.3          31.2                8.8 +/-    0.89      15.1 +/-    0.89  0.050 / 0.050