PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-20:58:00
G02     49.1           42.5               19.6 +/-   13.13      27.4 +/-   13.13  0.150 / 0.640
G05     92.7           71.2                3.0 +/-    9.96       3.1 +/-    9.96  0.170 / 0.620
G12     187.0          43.7               23.3 +/-   10.03      32.0 +/-   10.03  0.050 / 0.070
G20     202.1          49.2              -32.4 +/-   66.80     -41.3 +/-   66.80  0.070 / 0.070
G21     262.5          10.7                2.7 +/-   29.48       7.5 +/-   29.48  0.060 / 0.060
G25     246.7          58.0                3.8 +/-   13.33       4.4 +/-   13.33  0.060 / 0.060
G29     322.6          46.7               11.2 +/-    0.90      14.8 +/-    0.90  0.040 / 0.060