PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-18:27:50
G01     306.9          35.2                9.1 +/-    1.25      14.4 +/-    1.25  0.130 / 0.140
G10     105.0          38.7               10.3 +/-    0.90      15.4 +/-    0.90  0.080 / 0.150
G11     287.5          25.4                9.3 +/-    1.64      18.1 +/-    1.64  0.040 / 0.050
G14     341.8          68.6                8.4 +/-    0.78       9.0 +/-    0.78  0.040 / 0.050
G20     120.6          11.8               10.1 +/-    2.48      27.1 +/-    2.48  0.120 / 0.190
G22     309.6          23.8                8.0 +/-    1.07      16.1 +/-    1.07  0.070 / 0.210
G25     83.5           15.6                8.6 +/-    2.00      21.1 +/-    2.00  0.050 / 0.060
G31     168.3          62.7               11.4 +/-    0.60      12.7 +/-    0.60  0.060 / 0.070
G32     36.5           52.1                8.9 +/-    1.26      10.9 +/-    1.26  0.040 / 0.040