PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-15:57:30
G02     29.6           57.5                9.4 +/-    0.47      10.9 +/-    0.47  0.040 / 0.060
G05     144.8          60.6               11.2 +/-    0.90      12.7 +/-    0.90  0.040 / 0.060
G06     53.1           15.4                7.1 +/-    1.20      17.4 +/-    1.20  0.030 / 0.050
G12     197.9          68.9                7.5 +/-    0.94       7.9 +/-    0.94  0.040 / 0.060
G25     299.1          52.0                8.1 +/-    2.16      10.0 +/-    2.16  0.030 / 0.040
G29     306.1          26.8                7.6 +/-    1.80      14.2 +/-    1.80  0.050 / 0.050