PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/30-14:42:40
G02     75.3           19.6                6.6 +/-    1.40      14.7 +/-    1.40  0.030 / 0.040
G05     45.1           47.1                6.6 +/-    0.61       8.7 +/-    0.61  0.030 / 0.040
G12     178.4          11.9                9.6 +/-    4.00      25.6 +/-    4.00  0.250 / 0.660
G13     109.2          27.1                9.5 +/-    1.15      17.7 +/-    1.15  0.270 / 0.590
G15     151.0          29.6               10.4 +/-    2.29      18.3 +/-    2.29  0.100 / 0.110
G20     228.3          16.1                6.4 +/-    2.77      15.4 +/-    2.77  0.100 / 0.100
G21     287.9          28.8                5.2 +/-    1.44       9.3 +/-    1.44  0.140 / 0.130
G25     216.5          36.3                5.9 +/-    1.10       9.1 +/-    1.10  0.070 / 0.200
G26     314.4          13.7                2.6 +/-    3.26       6.6 +/-    3.26  0.030 / 0.020
G29     342.9          73.1                6.2 +/-    0.36       6.5 +/-    0.36  0.030 / 0.030