PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-01:12:30
G10     255.6          30.7               12.0 +/-    1.22      20.7 +/-    1.22  0.030 / 0.040
G13     48.8           26.4                9.3 +/-    2.14      17.5 +/-    2.14  0.040 / 0.040
G15     78.3           57.2               11.3 +/-    0.52      13.2 +/-    0.52  0.110 / 0.130
G16     288.7          15.2                7.3 +/-    3.44      18.1 +/-    3.44  0.110 / 0.140
G20     268.2          43.1               14.1 +/-    3.44      19.5 +/-    3.44  0.110 / 0.410
G21     339.9          63.6               10.6 +/-    0.64      11.7 +/-    0.64  0.130 / 0.490
G26     261.1          13.2                9.8 +/-    2.99      25.6 +/-    2.99  0.030 / 0.030
G29     166.6          44.6               12.5 +/-    0.69      16.9 +/-    0.69  0.030 / 0.030