PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-06:57:30
G02     44.6           45.1                3.2 +/-    1.71       4.3 +/-    1.71  0.030 / 0.030
G05     107.9          68.5                5.6 +/-    0.60       6.0 +/-    0.60  0.030 / 0.030
G06     59.7           9.6                 3.5 +/-    1.31       9.8 +/-    1.31  0.050 / 0.050
G12     192.6          56.4                5.8 +/-    0.49       6.8 +/-    0.49  0.030 / 0.040
G20     203.0          32.1                3.7 +/-    1.07       6.2 +/-    1.07  0.210 / 0.370
G25     278.3          57.6                9.0 +/-    1.43      10.4 +/-    1.43  0.130 / 0.310
G29     315.5          37.5                2.1 +/-    0.97       3.3 +/-    0.97  0.110 / 0.130