PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-18:43:10
G03     220.4          64.0               12.1 +/-    1.10      13.3 +/-    1.10  0.040 / 0.040
G07     252.6          14.2               10.8 +/-    5.26      27.3 +/-    5.26  0.050 / 0.040
G09     306.5          22.5               10.2 +/-    0.82      21.1 +/-    0.82  0.030 / 0.040
G14     104.3          9.8                14.1 +/-    2.25      39.5 +/-    2.25  0.040 / 0.040
G16     123.5          61.9               12.3 +/-    0.43      13.8 +/-    0.43  0.080 / 0.450
G22     190.3          48.0               13.0 +/-    0.74      16.8 +/-    0.74  0.090 / 0.370
G23     322.4          52.3               11.0 +/-    0.66      13.5 +/-    0.66  0.150 / 0.150
G26     67.1           53.1               10.8 +/-    1.03      13.2 +/-    1.03  0.120 / 0.130
G31     54.3           18.4                9.8 +/-    1.97      22.3 +/-    1.97  0.180 / 0.430