PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/19-14:58:00
G01     304.1          35.7                6.1 +/-    3.07       9.5 +/-    3.07  0.080 / 0.090
G10     109.4          36.6                8.1 +/-    0.69      12.5 +/-    0.69  0.090 / 0.100
G11     276.5          28.1                5.8 +/-    1.78      10.5 +/-    1.78  0.040 / 0.030
G14     6.1            65.0                5.4 +/-    0.46       5.9 +/-    0.46  0.040 / 0.050
G18     266.1          51.5                6.1 +/-    1.71       7.5 +/-    1.71  0.060 / 0.050
G20     122.6          11.4                8.5 +/-    2.74      22.9 +/-    2.74  0.060 / 0.050
G22     311.5          30.4                6.2 +/-    1.07      10.8 +/-    1.07  0.050 / 0.040
G25     76.2           16.5                7.7 +/-    1.96      18.4 +/-    1.96  0.040 / 0.030
G31     169.9          65.9                7.2 +/-    0.37       7.8 +/-    0.37  0.080 / 0.060
G32     36.0           52.8                6.0 +/-    0.71       7.3 +/-    0.71  0.050 / 0.050