PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-07:42:40
G10     288.7          49.3                6.1 +/-    3.17       7.8 +/-    3.17  0.150 / 0.110
G15     47.4           32.9                4.5 +/-    1.31       7.4 +/-    1.31  0.100 / 0.130
G20     336.7          65.2                6.1 +/-    0.54       6.6 +/-    0.54  0.060 / 0.040
G21     77.2           75.4                7.3 +/-    0.40       7.5 +/-    0.40  0.060 / 0.030
G24     103.4          23.6                7.2 +/-    1.60      14.6 +/-    1.60  0.070 / 0.080
G27     308.6          29.6                5.5 +/-    1.02       9.7 +/-    1.02  0.070 / 0.080
G32     209.1          20.3                6.4 +/-    2.90      13.9 +/-    2.90  0.090 / 0.120