PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-18:28:00
G03     223.3          65.4                9.2 +/-    1.10      10.0 +/-    1.10  0.050 / 0.030
G07     251.4          13.2               12.0 +/-    1.45      31.1 +/-    1.45  0.040 / 0.030
G09     305.6          21.1                7.9 +/-    3.36      16.9 +/-    3.36  0.270 / 0.310
G14     103.0          10.9                9.9 +/-    2.38      27.1 +/-    2.38  0.140 / 0.390
G16     127.2          60.8               10.8 +/-    0.43      12.2 +/-    0.43  0.220 / 0.210
G22     190.9          49.7               10.5 +/-    0.67      13.3 +/-    0.67  0.140 / 0.210
G23     321.1          50.9                9.0 +/-    0.85      11.3 +/-    0.85  0.150 / 0.230
G26     70.0           54.1                9.6 +/-    0.71      11.6 +/-    0.71  0.160 / 0.220
G31     53.4           19.5                7.3 +/-    2.64      16.3 +/-    2.64  0.030 / 0.040