PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-22:57:20
G02     223.1          67.7               13.4 +/-    1.09      14.4 +/-    1.09  0.040 / 0.060
G06     46.1           67.3               11.3 +/-    0.56      12.2 +/-    0.56  0.040 / 0.070
G12     320.6          43.1               10.1 +/-    1.25      13.9 +/-    1.25  0.060 / 0.080
G17     61.4           30.7               11.0 +/-    0.64      19.0 +/-    0.64  0.050 / 0.100
G19     45.7           45.9               10.8 +/-    0.92      14.4 +/-    0.92  0.050 / 0.050
G24     256.1          39.5               14.5 +/-    1.06      21.3 +/-    1.06  0.050 / 0.040