PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-22:57:40
G02     216.0          60.9               13.4 +/-    0.47      15.1 +/-    0.47  0.080 / 0.090
G06     62.3           77.1               11.0 +/-    0.68      11.2 +/-    0.68  0.070 / 0.090
G12     317.4          33.3                9.1 +/-    0.96      14.8 +/-    0.96  0.090 / 0.360
G17     57.3           31.8                9.4 +/-    0.92      15.8 +/-    0.92  0.130 / 0.330
G19     39.4           48.8                9.7 +/-    0.39      12.4 +/-    0.39  0.050 / 0.040
G24     263.9          41.6               12.7 +/-    1.47      18.0 +/-    1.47  0.050 / 0.050
G28     121.2          17.7               13.8 +/-    1.09      32.1 +/-    1.09  0.050 / 0.090