PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-22:13:00
G02     202.1          32.0               16.0 +/-    1.74      26.9 +/-    1.74  0.070 / 0.090
G06     168.1          63.7               15.8 +/-    0.62      17.4 +/-    0.62  0.060 / 0.100
G12     304.6          10.7               -2.8 +/-   22.71      -7.6 +/-   22.71  0.130 / 0.460
G17     33.6           51.0               12.4 +/-    0.61      15.5 +/-    0.61  0.130 / 0.380
G19     354.8          66.9               12.6 +/-    0.40      13.5 +/-    0.40  0.040 / 0.040
G24     300.0          37.2               14.9 +/-    0.76      22.7 +/-    0.76  0.050 / 0.050
G28     96.8           37.0               13.4 +/-    0.69      20.6 +/-    0.69  0.050 / 0.110