PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/18-10:58:00
G01     305.1          35.3                5.9 +/-    2.65       9.2 +/-    2.65  0.080 / 0.120
G10     108.3          37.3                6.0 +/-    0.75       9.1 +/-    0.75  0.080 / 0.140
G11     278.2          28.0                3.3 +/-    1.60       6.0 +/-    1.60  0.040 / 0.050
G14     3.3            65.7                4.2 +/-    0.60       4.6 +/-    0.60  0.030 / 0.050
G18     270.4          51.0               10.2 +/-    2.70      12.7 +/-    2.70  0.040 / 0.040
G20     121.9          12.3                3.7 +/-    2.09       9.7 +/-    2.09  0.040 / 0.040
G22     311.8          32.1                3.4 +/-    2.01       5.7 +/-    2.01  0.050 / 0.070
G25     79.4           16.6                3.4 +/-    2.09       8.0 +/-    2.09  0.040 / 0.060
G31     165.7          66.5                6.8 +/-    0.44       7.4 +/-    0.44  0.080 / 0.080
G32     32.5           55.0                4.5 +/-    1.38       5.3 +/-    1.38  0.080 / 0.130