PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-10:57:30
G01     306.8          34.2                5.1 +/-    1.36       8.1 +/-    1.36  0.100 / 0.120
G10     106.4          38.6                6.2 +/-    0.93       9.2 +/-    0.93  0.110 / 0.100
G11     280.4          28.0                6.3 +/-    1.45      11.5 +/-    1.45  0.030 / 0.030
G14     359.4          66.7                3.8 +/-    0.63       4.1 +/-    0.63  0.080 / 0.040
G18     273.6          51.0                6.3 +/-    1.25       7.8 +/-    1.25  0.060 / 0.060
G20     120.8          13.6                5.7 +/-    2.27      14.6 +/-    2.27  0.060 / 0.080
G22     311.2          30.7                4.8 +/-    1.43       8.4 +/-    1.43  0.040 / 0.050
G25     81.2           16.1                3.3 +/-    2.18       7.9 +/-    2.18  0.040 / 0.050
G31     167.6          64.5                5.1 +/-    1.50       5.6 +/-    1.50  0.090 / 0.130
G32     29.1           56.9                3.7 +/-    1.71       4.3 +/-    1.71  0.110 / 0.110