PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-19:27:30
G02     228.7          67.2               11.1 +/-    0.99      11.9 +/-    0.99  0.040 / 0.030
G06     42.8           62.7                9.0 +/-    0.56      10.0 +/-    0.56  0.040 / 0.040
G12     321.8          48.8                9.4 +/-    0.85      12.1 +/-    0.85  0.200 / 0.370
G17     68.9           22.8                7.6 +/-    2.80      15.6 +/-    2.80  0.330 / 0.410
G19     54.5           39.8                9.2 +/-    1.47      13.5 +/-    1.47  0.090 / 0.080
G24     252.7          37.6               10.2 +/-    3.16      15.5 +/-    3.16  0.060 / 0.080
G25     316.1          12.6                9.3 +/-    1.87      24.5 +/-    1.87  0.040 / 0.050