PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-02:27:40
G02     244.5          77.9                6.6 +/-    0.71       6.7 +/-    0.71  0.040 / 0.040
G05     170.5          17.3               10.3 +/-    1.46      24.3 +/-    1.46  0.040 / 0.050
G06     40.5           58.8                5.6 +/-    0.52       6.4 +/-    0.52  0.130 / 0.260
G12     321.4          51.5                4.9 +/-    0.51       6.0 +/-    0.51  0.150 / 0.220
G17     69.5           25.3                5.3 +/-    2.60      10.2 +/-    2.60  0.370 / 0.490
G19     57.1           38.9                5.1 +/-    1.99       7.6 +/-    1.99  0.300 / 0.320
G24     245.4          34.7                9.5 +/-    2.40      15.2 +/-    2.40  0.050 / 0.040
G25     316.7          11.7               -4.4 +/-   27.26     -11.7 +/-   27.26  0.050 / 0.040