PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-22:27:30
G02     232.8          72.9               15.6 +/-    0.60      16.2 +/-    0.60  0.060 / 0.110
G05     172.5          13.2               23.9 +/-    3.68      61.9 +/-    3.68  0.070 / 0.110
G06     41.8           64.6               13.4 +/-    0.66      14.6 +/-    0.66  0.060 / 0.080
G12     320.4          45.1               11.8 +/-    1.36      15.9 +/-    1.36  0.050 / 0.070
G17     67.2           24.6               12.5 +/-    1.19      24.6 +/-    1.19  0.040 / 0.040
G19     53.0           40.6               13.6 +/-    0.99      19.6 +/-    0.99  0.030 / 0.040
G24     248.7          36.8               17.8 +/-    1.25      27.3 +/-    1.25  0.040 / 0.040