PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-15:58:00
G02     202.6          28.7               13.2 +/-    1.69      23.7 +/-    1.69  0.060 / 0.120
G06     163.0          64.7               10.7 +/-    0.52      11.7 +/-    0.52  0.070 / 0.090
G12     304.3          11.2               -1.9 +/-   19.41      -5.1 +/-   19.41  0.080 / 0.110
G17     28.2           55.0                8.5 +/-    1.46      10.2 +/-    1.46  0.090 / 0.120
G19     355.1          67.2                8.5 +/-    0.53       9.2 +/-    0.53  0.030 / 0.050
G24     302.3          35.3                9.4 +/-    1.27      14.8 +/-    1.27  0.050 / 0.040
G28     94.6           39.1                9.2 +/-    0.84      13.6 +/-    0.84  0.030 / 0.030