PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-01:12:50
G05     49.4           15.2                7.8 +/-    2.58      19.4 +/-    2.58  0.150 / 0.260
G10     237.1          13.4               12.7 +/-    2.44      32.9 +/-    2.44  0.140 / 0.240
G13     73.9           36.3               11.0 +/-    1.55      17.0 +/-    1.55  0.110 / 0.190
G15     124.7          53.0               12.7 +/-    1.91      15.5 +/-    1.91  0.110 / 0.290
G16     311.9          13.6                7.7 +/-    2.50      19.9 +/-    2.50  0.050 / 0.060
G20     247.7          33.2               11.8 +/-    2.14      19.4 +/-    2.14  0.050 / 0.070
G21     313.8          47.3               10.4 +/-    1.00      13.6 +/-    1.00  0.070 / 0.090
G26     284.4          20.7               11.0 +/-    1.91      23.7 +/-    1.91  0.050 / 0.090
G29     157.5          71.9               11.2 +/-    0.36      11.7 +/-    0.36  0.030 / 0.040