PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/24-07:12:40
G02     258.1          80.5                3.4 +/-    0.64       3.5 +/-    0.64  0.070 / 0.200
G05     170.0          19.5                3.3 +/-    1.80       7.3 +/-    1.80  0.050 / 0.180
G06     39.3           59.0                2.9 +/-    0.39       3.3 +/-    0.39  0.040 / 0.050
G12     321.1          53.6                4.7 +/-    0.67       5.6 +/-    0.67  0.040 / 0.050
G17     73.7           20.7                3.0 +/-    1.16       6.6 +/-    1.16  0.080 / 0.160
G19     61.2           36.0                2.6 +/-    0.66       4.0 +/-    0.66  0.090 / 0.180
G24     243.0          33.1                6.9 +/-    1.08      11.4 +/-    1.08  0.090 / 0.090
G25     317.3          14.7                2.0 +/-    1.46       5.0 +/-    1.46  0.110 / 0.120