PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-14:42:30
G02     204.3          32.9               10.1 +/-    1.31      16.6 +/-    1.31  0.230 / 0.420
G06     155.5          70.2                9.1 +/-    0.99       9.7 +/-    0.99  0.170 / 0.420
G12     307.2          15.4                4.4 +/-    2.31      10.8 +/-    2.31  0.050 / 0.180
G17     32.8           51.6                6.7 +/-    0.41       8.3 +/-    0.41  0.050 / 0.160
G19     6.3            64.1                6.6 +/-    0.56       7.2 +/-    0.56  0.060 / 0.090
G24     297.5          37.7                8.9 +/-    0.59      13.5 +/-    0.59  0.070 / 0.110
G28     99.7           36.3                7.5 +/-    1.66      11.6 +/-    1.66  0.060 / 0.090