PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-09:42:40
G02     230.6          73.4                4.3 +/-    0.63       4.5 +/-    0.63  0.230 / 0.320
G05     174.0          11.8               -0.3 +/-    7.31      -0.9 +/-    7.31  0.240 / 0.320
G06     42.4           69.3                3.8 +/-    0.34       4.0 +/-    0.34  0.060 / 0.090
G12     320.9          45.5                3.8 +/-    0.43       5.1 +/-    0.43  0.070 / 0.080
G17     67.8           24.3                3.5 +/-    1.42       6.8 +/-    1.42  0.030 / 0.040
G19     53.6           40.6                2.7 +/-    1.06       3.9 +/-    1.06  0.030 / 0.050
G24     252.3          37.4                5.0 +/-    1.08       7.6 +/-    1.08  0.030 / 0.020