PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-21:27:40
G02     201.7          30.0               13.1 +/-    1.44      23.0 +/-    1.44  0.090 / 0.100
G06     168.6          62.0               12.7 +/-    0.49      14.2 +/-    0.49  0.070 / 0.110
G17     31.5           52.6               11.7 +/-    1.18      14.3 +/-    1.18  0.060 / 0.090
G19     350.7          67.9               10.8 +/-    0.83      11.6 +/-    0.83  0.060 / 0.080
G24     302.0          36.0               10.4 +/-    1.93      16.2 +/-    1.93  0.030 / 0.030
G28     94.7           38.3               12.4 +/-    1.03      18.6 +/-    1.03  0.030 / 0.030