PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-00:12:40
G05     47.3           20.9                7.6 +/-    0.62      16.4 +/-    0.62  0.050 / 0.170
G13     82.6           36.3               11.3 +/-    1.18      17.4 +/-    1.18  0.070 / 0.180
G15     134.7          48.1               13.2 +/-    1.05      17.0 +/-    1.05  0.120 / 0.550
G16     317.4          11.2                4.9 +/-   13.14      13.4 +/-   13.14  0.130 / 0.520
G20     241.1          22.2               13.0 +/-    1.13      27.1 +/-    1.13  0.140 / 0.300
G21     307.6          42.9               10.1 +/-    1.15      14.1 +/-    1.15  0.180 / 0.320
G25     202.0          15.0               15.1 +/-    2.30      37.5 +/-    2.30  0.040 / 0.100
G26     291.4          21.1               11.4 +/-    2.07      24.3 +/-    2.07  0.040 / 0.080
G29     150.2          79.7               10.2 +/-    0.50      10.4 +/-    0.50  0.030 / 0.030