PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-21:28:20
G02     202.8          34.3               15.7 +/-    0.97      25.3 +/-    0.97  0.150 / 0.310
G06     164.9          66.7               14.4 +/-    0.44      15.5 +/-    0.44  0.130 / 0.260
G12     305.9          12.4               10.8 +/-    2.95      28.5 +/-    2.95  0.140 / 0.090
G17     35.3           49.6               12.8 +/-    0.97      16.2 +/-    0.97  0.080 / 0.090
G19     0.5            65.6               12.5 +/-    0.66      13.6 +/-    0.66  0.050 / 0.080
G24     297.8          38.2               12.3 +/-    1.52      18.5 +/-    1.52  0.060 / 0.090
G28     99.1           35.7               13.3 +/-    0.54      20.8 +/-    0.54  0.030 / 0.030