PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-06:27:30
G10     288.6          48.5                5.7 +/-    1.24       7.3 +/-    1.24  0.060 / 0.090
G15     47.5           33.5                2.9 +/-    0.57       4.8 +/-    0.57  0.050 / 0.090
G20     31.3           59.2                5.6 +/-    0.69       6.4 +/-    0.69  0.040 / 0.050
G21     71.2           77.0                5.5 +/-    5.35       5.6 +/-    5.35  0.040 / 0.050
G24     103.8          23.9                5.4 +/-    0.87      10.9 +/-    0.87  0.080 / 0.190
G27     306.2          31.5                5.6 +/-    1.28       9.6 +/-    1.28  0.060 / 0.160
G29     168.7          13.6                6.3 +/-    5.57      16.3 +/-    5.57  0.040 / 0.040
G32     208.0          27.7                6.6 +/-    1.89      12.2 +/-    1.89  0.040 / 0.040