PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-04:28:10
G01     43.6           19.5                2.4 +/-    2.44       5.3 +/-    2.44  0.040 / 0.050
G06     178.6          31.8                5.9 +/-    1.50       9.9 +/-    1.50  0.040 / 0.060
G13     242.5          24.8                3.2 +/-    1.06       6.2 +/-    1.06  0.150 / 0.270
G15     274.1          13.9                1.7 +/-    1.80       4.4 +/-    1.80  0.440 / 0.340
G17     349.7          73.8                3.2 +/-    0.50       3.3 +/-    0.50  0.110 / 0.190
G19     267.3          67.5                3.0 +/-    0.80       3.2 +/-    0.80  0.130 / 0.240
G24     318.1          14.8               -0.4 +/-    2.82      -1.0 +/-    2.82  0.020 / 0.020
G28     66.7           48.4                2.0 +/-    1.36       2.5 +/-    1.36  0.020 / 0.020
G30     152.3          28.7                7.2 +/-    1.16      13.0 +/-    1.16  0.080 / 0.380