PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-01:57:50
G10     269.8          40.9               13.0 +/-    1.04      18.7 +/-    1.04  0.140 / 0.290
G13     40.6           15.7                7.1 +/-    2.36      17.3 +/-    2.36  0.160 / 0.300
G15     56.3           46.2                8.1 +/-    0.63      10.7 +/-    0.63  0.050 / 0.060
G16     278.4          11.6               11.4 +/-    2.89      30.8 +/-    2.89  0.070 / 0.060
G20     301.9          61.0               11.6 +/-    1.02      13.1 +/-    1.02  0.160 / 0.550
G24     119.0          15.5               10.2 +/-    2.21      25.2 +/-    2.21  0.200 / 0.610
G27     318.2          19.7                9.0 +/-    2.84      20.0 +/-    2.84  0.170 / 0.550
G29     166.7          27.6               11.8 +/-    0.83      21.7 +/-    0.83  0.160 / 0.540