PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-10:58:00
G01     246.1          33.7                6.5 +/-    1.66      10.5 +/-    1.66  0.040 / 0.020
G03     315.1          51.3                5.4 +/-    0.91       6.7 +/-    0.91  0.040 / 0.040
G14     63.9           38.3                4.4 +/-    1.10       6.5 +/-    1.10  0.100 / 0.110
G16     163.0          19.8                3.5 +/-    7.71       7.8 +/-    7.71  0.080 / 0.100
G18     216.4          24.0                5.8 +/-    3.03      11.7 +/-    3.03  0.050 / 0.070
G22     294.8          72.3                5.3 +/-    0.36       5.5 +/-    0.36  0.060 / 0.060
G23     289.8          22.6                5.0 +/-    1.48      10.3 +/-    1.48  0.050 / 0.070
G26     135.3          40.3                6.5 +/-    1.51       9.3 +/-    1.51  0.050 / 0.070
G31     41.0           54.8                4.5 +/-    1.03       5.4 +/-    1.03  0.090 / 0.130
G32     78.2           24.0                5.3 +/-    2.00      10.6 +/-    2.00  0.120 / 0.120