PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-22:42:50
G02     240.3          75.7                7.6 +/-    0.34       7.8 +/-    0.34  0.350 / 0.730
G05     171.3          15.9               15.4 +/-    1.22      37.5 +/-    1.22  0.350 / 0.300
G06     40.4           61.5                8.7 +/-    0.77       9.7 +/-    0.77  0.090 / 0.120
G12     320.7          48.2                7.6 +/-    0.57       9.7 +/-    0.57  0.070 / 0.080
G17     69.8           22.7                8.4 +/-    1.91      17.4 +/-    1.91  0.030 / 0.030
G19     56.2           38.6                9.8 +/-    1.18      14.6 +/-    1.18  0.030 / 0.020
G24     245.3          35.1               11.9 +/-    1.89      18.8 +/-    1.89  0.050 / 0.050
G25     316.1          11.6               -9.0 +/-   33.80     -24.1 +/-   33.80  0.040 / 0.050