PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-23:57:30
G02     265.7          80.3               11.1 +/-    0.39      11.3 +/-    0.39  0.150 / 0.410
G05     168.8          21.4               17.3 +/-    1.16      36.8 +/-    1.16  0.410 / 0.250
G06     39.0           56.0               12.3 +/-    0.63      14.5 +/-    0.63  0.070 / 0.110
G12     320.5          54.3               11.6 +/-    1.23      13.9 +/-    1.23  0.100 / 0.130
G17     75.1           18.7               10.7 +/-    1.22      24.3 +/-    1.22  0.070 / 0.030
G19     62.1           35.0               11.8 +/-    1.67      18.8 +/-    1.67  0.050 / 0.040
G24     238.7          31.4               13.3 +/-    1.58      22.6 +/-    1.58  0.100 / 0.180
G25     317.1          17.3                8.8 +/-    3.17      20.8 +/-    3.17  0.130 / 0.220