PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/20-23:27:30
G02     291.6          81.6                8.3 +/-    0.28       8.3 +/-    0.28  0.120 / 0.140
G05     167.1          25.6               13.2 +/-    1.86      25.5 +/-    1.86  0.080 / 0.130
G06     40.2           48.1                8.1 +/-    0.65      10.5 +/-    0.65  0.030 / 0.040
G12     319.8          62.6                8.2 +/-    0.96       9.1 +/-    0.96  0.020 / 0.040
G17     77.6           19.1                8.8 +/-    0.82      19.7 +/-    0.82  0.090 / 0.140
G19     65.6           34.1                8.7 +/-    1.07      14.0 +/-    1.07  0.040 / 0.130
G24     235.6          28.8               12.9 +/-    1.24      23.2 +/-    1.24  0.110 / 0.370
G25     317.8          20.0                8.3 +/-    1.78      18.3 +/-    1.78  0.140 / 0.390