PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-05:57:30
G10     303.4          54.2                7.7 +/-    1.24       9.3 +/-    1.24  0.040 / 0.040
G14     210.6          15.0                8.7 +/-    2.54      21.6 +/-    2.54  0.040 / 0.050
G15     45.6           24.0                4.6 +/-    2.33       9.1 +/-    2.33  0.030 / 0.050
G20     0.4            65.0                7.6 +/-    1.31       8.2 +/-    1.31  0.040 / 0.050
G21     106.6          71.1                7.7 +/-    0.72       8.1 +/-    0.72  0.080 / 0.090
G24     93.6           27.5                7.6 +/-    1.11      14.1 +/-    1.11  0.090 / 0.090
G27     298.5          34.8                9.5 +/-    1.77      15.2 +/-    1.77  0.260 / 0.610
G32     212.3          31.2                9.2 +/-    2.00      15.8 +/-    2.00  0.150 / 0.430