PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/11-14:28:00
G01     320.4          14.4                2.3 +/-    1.15       5.9 +/-    1.15  0.110 / 0.210
G08     259.8          15.6                3.3 +/-    2.43       8.1 +/-    2.43  0.110 / 0.240
G10     73.0           54.8                5.2 +/-    0.92       6.2 +/-    0.92  0.040 / 0.040
G11     306.0          21.6                4.5 +/-    2.37       9.5 +/-    2.37  0.040 / 0.040
G14     284.7          70.1                4.1 +/-    0.71       4.3 +/-    0.71  0.100 / 0.250
G18     306.4          40.4                3.7 +/-    1.61       5.4 +/-    1.61  0.130 / 0.270
G20     101.5          32.1                5.0 +/-    1.01       8.4 +/-    1.01  0.030 / 0.030
G27     229.5          12.5                3.3 +/-    2.67       8.6 +/-    2.67  0.040 / 0.030
G31     179.9          33.7                7.0 +/-    1.06      11.4 +/-    1.06  0.060 / 0.080
G32     347.9          71.9                5.2 +/-    0.40       5.4 +/-    0.40  0.060 / 0.100