PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-09:28:10
G02     32.2           56.6                4.4 +/-    1.01       5.2 +/-    1.01  0.040 / 0.030
G05     143.9          59.1                8.0 +/-    0.68       9.2 +/-    0.68  0.030 / 0.030
G06     50.7           22.5                2.5 +/-    2.37       5.1 +/-    2.37  0.030 / 0.020
G12     210.8          72.6                5.8 +/-    1.17       6.1 +/-    1.17  0.030 / 0.030
G19     97.6           11.3                6.7 +/-    1.57      18.1 +/-    1.57  0.180 / 0.410
G20     199.7          19.4                2.0 +/-    2.68       4.4 +/-    2.68  0.210 / 0.300
G25     302.2          50.7                3.8 +/-    2.47       4.7 +/-    2.47  0.070 / 0.050
G29     306.1          27.7                3.4 +/-    1.51       6.2 +/-    1.51  0.040 / 0.050