PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-04:58:00
G01     42.5           18.1                2.1 +/-    0.43       4.9 +/-    0.43  0.040 / 0.070
G06     178.5          33.7                6.8 +/-    1.70      11.0 +/-    1.70  0.040 / 0.080
G13     240.7          23.6                3.4 +/-    1.08       6.8 +/-    1.08  0.030 / 0.030
G15     272.2          13.3                4.0 +/-    1.76      10.3 +/-    1.76  0.030 / 0.020
G17     355.8          72.3                4.7 +/-    0.56       4.9 +/-    0.56  0.200 / 0.310
G19     272.9          68.7                4.9 +/-    0.66       5.2 +/-    0.66  0.170 / 0.220
G24     317.6          16.4                2.9 +/-    3.78       6.9 +/-    3.78  0.070 / 0.160
G28     69.4           47.4                3.0 +/-    0.36       4.0 +/-    0.36  0.070 / 0.160
G30     153.0          27.0                7.3 +/-    1.10      13.7 +/-    1.10  0.070 / 0.080