PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-03:43:10
G02     201.4          32.6                6.6 +/-    1.12      10.9 +/-    1.12  0.050 / 0.040
G06     168.6          63.4                6.7 +/-    0.72       7.4 +/-    0.72  0.030 / 0.040
G12     305.1          11.2               -4.6 +/-   13.70     -12.4 +/-   13.70  0.050 / 0.110
G17     30.7           53.4                4.2 +/-    0.71       5.1 +/-    0.71  0.060 / 0.120
G19     353.5          67.2                3.3 +/-    0.60       3.5 +/-    0.60  0.030 / 0.040
G24     302.6          35.5                3.2 +/-    0.94       5.0 +/-    0.94  0.030 / 0.060
G28     99.2           33.1                4.3 +/-    0.81       7.1 +/-    0.81  0.130 / 0.370