PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-21:42:50
G01     315.5          26.1                8.1 +/-    1.61      15.4 +/-    1.61  0.110 / 0.250
G10     91.2           46.9               11.2 +/-    0.74      14.7 +/-    0.74  0.120 / 0.300
G11     298.3          24.0                9.5 +/-    2.54      19.1 +/-    2.54  0.040 / 0.040
G14     308.6          70.2               10.8 +/-    0.70      11.4 +/-    0.70  0.050 / 0.050
G20     112.2          21.8               11.6 +/-    0.74      24.4 +/-    0.74  0.150 / 0.250
G22     304.4          14.1                8.9 +/-    0.84      22.6 +/-    0.84  0.150 / 0.270
G25     95.6           11.2               11.2 +/-    1.67      30.4 +/-    1.67  0.120 / 0.190
G31     172.6          50.8               11.9 +/-    0.66      14.9 +/-    0.66  0.100 / 0.190
G32     21.7           61.4                9.9 +/-    0.80      11.1 +/-    0.80  0.060 / 0.040