PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-06:43:00
G02     37.7           51.6                3.5 +/-    0.45       4.3 +/-    0.45  0.080 / 0.270
G05     130.8          64.5                6.5 +/-    0.83       7.1 +/-    0.83  0.080 / 0.270
G06     54.7           15.7                2.6 +/-    1.29       6.3 +/-    1.29  0.140 / 0.410
G12     199.3          65.9                3.9 +/-    0.45       4.2 +/-    0.45  0.150 / 0.360
G20     201.3          23.6                4.6 +/-    2.42       9.2 +/-    2.42  0.030 / 0.030
G25     293.9          54.3                3.8 +/-    0.67       4.6 +/-    0.67  0.040 / 0.030
G29     309.7          30.9                2.2 +/-    1.47       3.8 +/-    1.47  0.020 / 0.040