PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-02:27:50
G02     31.2           56.7                7.6 +/-    1.18       8.9 +/-    1.18  0.160 / 0.200
G05     141.4          60.1                9.5 +/-    0.65      10.7 +/-    0.65  0.130 / 0.260
G06     50.9           21.0                5.5 +/-    2.04      11.9 +/-    2.04  0.080 / 0.040
G12     211.3          72.8                8.9 +/-    0.84       9.2 +/-    0.84  0.060 / 0.060
G19     97.5           11.1                7.3 +/-    2.38      20.0 +/-    2.38  0.030 / 0.030
G25     299.9          52.5                7.4 +/-    2.16       9.1 +/-    2.16  0.030 / 0.030
G29     307.5          30.0                7.7 +/-    0.85      13.4 +/-    0.85  0.040 / 0.030