PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-08:28:10
G02     215.4          58.6                6.8 +/-    1.00       7.8 +/-    1.00  0.030 / 0.030
G06     63.7           76.9                5.8 +/-    0.71       5.9 +/-    0.71  0.030 / 0.030
G12     317.9          34.5                3.5 +/-    1.07       5.6 +/-    1.07  0.050 / 0.100
G17     57.9           30.7                4.6 +/-    0.67       8.0 +/-    0.67  0.050 / 0.120
G19     35.1           51.6                4.5 +/-    0.71       5.6 +/-    0.71  0.050 / 0.080
G24     260.6          42.7                4.6 +/-    1.16       6.4 +/-    1.16  0.070 / 0.080
G28     121.2          16.3                9.2 +/-    1.56      22.1 +/-    1.56  0.110 / 0.290