PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-07:42:40
G08     302.0          20.7                4.2 +/-    3.02       9.1 +/-    3.02  0.060 / 0.110
G10     354.0          62.4                3.1 +/-    0.86       3.5 +/-    0.86  0.060 / 0.120
G14     225.0          36.3                7.5 +/-    2.26      11.7 +/-    2.26  0.060 / 0.090
G20     76.1           37.3                3.2 +/-    1.01       4.9 +/-    1.01  0.060 / 0.090
G21     143.1          46.7                7.2 +/-    1.03       9.5 +/-    1.03  0.060 / 0.090
G24     61.7           27.7                3.0 +/-    0.80       5.6 +/-    0.80  0.060 / 0.090
G27     260.6          34.3                6.4 +/-    0.94      10.3 +/-    0.94  0.030 / 0.040
G32     236.6          64.5                8.6 +/-    0.57       9.4 +/-    0.57  0.040 / 0.030