PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-04:58:00
G01     43.5           19.4                2.4 +/-    2.63       5.3 +/-    2.63  0.040 / 0.050
G06     178.8          31.7                6.8 +/-    1.31      11.5 +/-    1.31  0.040 / 0.050
G13     242.4          24.7                5.2 +/-    0.71      10.3 +/-    0.71  0.110 / 0.220
G15     273.9          13.9                2.7 +/-    2.41       6.9 +/-    2.41  0.080 / 0.240
G17     351.1          73.6                4.2 +/-    0.34       4.4 +/-    0.34  0.030 / 0.020
G19     267.9          67.7                4.7 +/-    0.76       5.1 +/-    0.76  0.020 / 0.020
G24     318.1          14.9                0.5 +/-    3.16       1.1 +/-    3.16  0.420 / 0.380
G28     66.9           48.3                4.4 +/-    1.82       5.6 +/-    1.82  0.240 / 0.240
G30     152.5          28.9                8.7 +/-    1.73      15.6 +/-    1.73  0.080 / 0.090