PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-07:57:40
G02     38.2           51.1                4.5 +/-    1.20       5.6 +/-    1.20  0.030 / 0.030
G05     130.2          64.9                7.4 +/-    0.51       8.1 +/-    0.51  0.030 / 0.020
G06     54.8           16.0                3.7 +/-    2.57       9.0 +/-    2.57  0.170 / 0.230
G12     199.1          65.4                6.9 +/-    0.48       7.5 +/-    0.48  0.100 / 0.210
G20     201.0          25.0                4.7 +/-    3.07       9.2 +/-    3.07  0.030 / 0.030
G25     292.8          54.7                5.7 +/-    1.53       6.9 +/-    1.53  0.040 / 0.030
G29     310.4          31.9                3.2 +/-    1.15       5.4 +/-    1.15  0.100 / 0.220