PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/20-18:13:00
G03     221.6          64.8               10.5 +/-    1.07      11.5 +/-    1.07  0.110 / 0.370
G07     251.9          13.7               13.4 +/-    3.20      34.5 +/-    3.20  0.050 / 0.330
G09     305.9          21.5               10.1 +/-    1.49      21.3 +/-    1.49  0.040 / 0.040
G14     103.5          10.5               12.7 +/-    3.47      35.1 +/-    3.47  0.040 / 0.040
G16     126.5          61.1               11.5 +/-    0.44      12.9 +/-    0.44  0.130 / 0.200
G22     190.3          48.9               12.9 +/-    0.67      16.5 +/-    0.67  0.120 / 0.210
G23     321.7          51.5                9.7 +/-    0.89      12.0 +/-    0.89  0.210 / 0.440
G26     68.4           53.4                9.3 +/-    0.74      11.3 +/-    0.74  0.230 / 0.390
G31     53.8           18.9                7.4 +/-    2.21      16.8 +/-    2.21  0.030 / 0.040