PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-09:12:30
G02     32.4           56.5                3.8 +/-    0.36       4.5 +/-    0.36  0.030 / 0.050
G05     143.5          59.3                6.6 +/-    0.81       7.5 +/-    0.81  0.030 / 0.040
G06     50.9           22.1                0.9 +/-    0.41       1.9 +/-    0.41  0.170 / 0.350
G12     210.3          72.4                4.9 +/-    0.96       5.1 +/-    0.96  0.100 / 0.300
G19     97.7           11.3                4.6 +/-    1.52      12.4 +/-    1.52  0.030 / 0.030
G20     199.8          19.4                4.0 +/-    2.57       8.8 +/-    2.57  0.030 / 0.040
G25     302.1          50.7                3.9 +/-    0.64       4.8 +/-    0.64  0.060 / 0.110
G29     306.1          27.7                2.2 +/-    0.60       4.0 +/-    0.60  0.060 / 0.130