PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-01:57:50
G10     280.9          46.3               12.2 +/-    1.02      16.1 +/-    1.02  0.050 / 0.050
G15     49.9           38.6                8.0 +/-    0.70      11.9 +/-    0.70  0.060 / 0.050
G20     321.5          64.0                9.5 +/-    0.85      10.4 +/-    0.85  0.070 / 0.120
G21     40.5           76.8               10.6 +/-    0.85      10.8 +/-    0.85  0.080 / 0.160
G24     110.9          20.6               11.7 +/-    0.71      25.3 +/-    0.71  0.070 / 0.070
G27     312.7          26.5               10.0 +/-    1.88      18.8 +/-    1.88  0.060 / 0.060
G29     167.4          18.5               13.5 +/-    2.22      30.8 +/-    2.22  0.030 / 0.070
G32     206.6          17.8               14.4 +/-    2.97      33.4 +/-    2.97  0.040 / 0.070