PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-22:43:10
G02     232.4          72.8               12.1 +/-    0.42      12.6 +/-    0.42  0.040 / 0.050
G05     172.5          13.1               17.9 +/-    2.78      46.5 +/-    2.78  0.040 / 0.060
G06     41.9           65.0               11.7 +/-    0.63      12.8 +/-    0.63  0.060 / 0.080
G12     320.4          44.9               10.8 +/-    0.40      14.6 +/-    0.40  0.070 / 0.080
G17     67.2           24.6               13.3 +/-    3.07      26.3 +/-    3.07  0.150 / 0.220
G19     52.8           40.7               11.5 +/-    1.41      16.5 +/-    1.41  0.190 / 0.230
G24     248.8          36.9               13.0 +/-    1.23      20.0 +/-    1.23  0.030 / 0.030