PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-05:27:30
G10     288.9          49.4                6.4 +/-    1.02       8.1 +/-    1.02  0.100 / 0.120
G15     47.4           32.8                4.5 +/-    0.76       7.4 +/-    0.76  0.070 / 0.120
G20     336.6          65.1                3.5 +/-    0.65       3.8 +/-    0.65  0.040 / 0.040
G21     73.1           76.2                6.9 +/-    1.08       7.1 +/-    1.08  0.040 / 0.040
G24     104.1          23.7                5.1 +/-    1.86      10.3 +/-    1.86  0.040 / 0.040
G27     308.3          30.0                5.6 +/-    2.80       9.9 +/-    2.80  0.050 / 0.050
G29     166.6          11.1                4.3 +/-    2.57      11.6 +/-    2.57  0.080 / 0.190
G32     208.7          21.8                6.3 +/-    2.50      13.2 +/-    2.50  0.070 / 0.210