PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-12:43:10
G01     231.4          22.7               18.6 +/-    1.12      38.3 +/-    1.12  0.100 / 0.270
G03     297.8          67.3                4.9 +/-    0.65       5.3 +/-    0.65  0.100 / 0.260
G14     79.6           28.3                5.1 +/-    0.80       9.3 +/-    0.80  0.060 / 0.050
G16     155.5          35.0                8.5 +/-    0.88      13.5 +/-    0.88  0.050 / 0.040
G18     206.2          11.4                4.3 +/-    3.37      11.5 +/-    3.37  0.040 / 0.030
G22     224.1          74.9                7.2 +/-    0.61       7.4 +/-    0.61  0.030 / 0.040
G23     301.7          32.4                5.8 +/-    1.39       9.7 +/-    1.39  0.100 / 0.180
G26     115.5          51.7                8.8 +/-    1.08      10.8 +/-    1.08  0.100 / 0.190
G31     42.8           39.5                3.3 +/-    1.15       4.9 +/-    1.15  0.070 / 0.130
G32     91.5           14.7                5.3 +/-    1.00      13.4 +/-    1.00  0.070 / 0.120