PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-18:27:30
G02     228.3          68.6               10.3 +/-    0.61      11.0 +/-    0.61  0.180 / 0.310
G05     174.1          11.1               -1.2 +/-   25.18      -3.3 +/-   25.18  0.210 / 0.440
G06     43.2           62.4                9.0 +/-    0.52      10.1 +/-    0.52  0.060 / 0.100
G12     322.2          49.7                8.7 +/-    0.77      11.0 +/-    0.77  0.080 / 0.100
G17     66.3           25.6                8.3 +/-    4.74      16.0 +/-    4.74  0.040 / 0.050
G19     48.2           44.8                9.7 +/-    0.84      13.1 +/-    0.84  0.030 / 0.040
G24     250.2          37.8               11.0 +/-    1.78      16.6 +/-    1.78  0.030 / 0.030