PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-03:28:10
G02     28.2           59.9                6.1 +/-    0.57       7.0 +/-    0.57  0.030 / 0.020
G05     146.5          56.4                8.0 +/-    0.37       9.4 +/-    0.37  0.020 / 0.020
G06     50.0           21.7                4.6 +/-    2.69       9.7 +/-    2.69  0.030 / 0.030
G12     216.4          75.4                7.9 +/-    0.75       8.1 +/-    0.75  0.030 / 0.040
G19     94.1           14.7                6.4 +/-    2.31      15.9 +/-    2.31  0.060 / 0.070
G25     306.5          47.4                7.2 +/-    0.96       9.3 +/-    0.96  0.040 / 0.080
G29     302.2          22.7                7.4 +/-    1.46      15.3 +/-    1.46  0.200 / 0.150