PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-18:27:30
G02     231.4          70.3               10.1 +/-    1.04      10.7 +/-    1.04  0.120 / 0.220
G05     173.4          12.6               13.2 +/-    2.82      34.6 +/-    2.82  0.100 / 0.220
G06     42.2           60.5                9.7 +/-    0.45      11.0 +/-    0.45  0.030 / 0.060
G12     322.4          51.7                7.7 +/-    1.33       9.5 +/-    1.33  0.040 / 0.060
G17     67.8           24.4                9.8 +/-    1.45      19.3 +/-    1.45  0.040 / 0.050
G19     50.3           43.7                8.4 +/-    0.35      11.6 +/-    0.35  0.040 / 0.050
G24     248.0          36.9               11.4 +/-    1.49      17.4 +/-    1.49  0.060 / 0.090