PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-07:12:30
G02     33.6           55.4                1.0 +/-    1.47       1.2 +/-    1.47  0.040 / 0.040
G05     140.3          60.7                5.0 +/-    0.59       5.6 +/-    0.59  0.030 / 0.030
G06     52.0           19.8                1.0 +/-    3.09       2.2 +/-    3.09  0.200 / 0.290
G12     207.0          71.1                2.3 +/-    0.45       2.5 +/-    0.45  0.180 / 0.310
G19     98.5           10.9                5.9 +/-    1.54      16.0 +/-    1.54  0.220 / 0.320
G20     200.5          19.4                4.0 +/-    1.98       9.0 +/-    1.98  0.120 / 0.280
G25     300.8          51.3                2.1 +/-    2.01       2.6 +/-    2.01  0.020 / 0.030
G29     306.5          27.6                1.5 +/-    2.50       2.8 +/-    2.50  0.030 / 0.030