PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-05:28:00
G10     241.2          17.7                5.5 +/-    2.47      12.9 +/-    2.47  0.120 / 0.370
G13     66.7           35.3                5.1 +/-    0.76       8.1 +/-    0.76  0.130 / 0.480
G15     110.3          56.1                6.0 +/-    0.41       7.0 +/-    0.41  0.040 / 0.050
G16     306.9          14.7                2.7 +/-    2.80       6.7 +/-    2.80  0.040 / 0.040
G20     284.4          69.4                5.2 +/-    0.68       5.5 +/-    0.68  0.120 / 0.300
G21     320.2          51.8                4.9 +/-    1.48       6.0 +/-    1.48  0.130 / 0.340
G26     278.4          19.6                4.3 +/-    1.57       9.5 +/-    1.57  0.040 / 0.050
G29     160.7          64.1                6.6 +/-    1.05       7.3 +/-    1.05  0.030 / 0.040