PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-14:57:30
G02     203.4          32.4               10.2 +/-    2.08      17.0 +/-    2.08  0.050 / 0.090
G06     162.2          68.0                6.8 +/-    0.99       7.3 +/-    0.99  0.050 / 0.090
G12     307.5          14.8                4.1 +/-    2.67      10.2 +/-    2.67  0.100 / 0.330
G17     38.1           47.5                5.4 +/-    0.66       7.0 +/-    0.66  0.220 / 0.310
G19     5.3            64.6                5.9 +/-    0.30       6.4 +/-    0.30  0.030 / 0.030
G24     300.4          36.6                7.3 +/-    1.86      11.2 +/-    1.86  0.030 / 0.030
G28     102.4          31.1                6.1 +/-    0.86      10.4 +/-    0.86  0.030 / 0.050