PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/20-18:42:50
G01     92.6           31.3               11.8 +/-    0.90      20.1 +/-    0.90  0.110 / 0.190
G07     123.5          47.7               12.2 +/-    0.89      15.9 +/-    0.89  0.150 / 0.300
G08     42.3           11.1                8.1 +/-    1.75      22.1 +/-    1.75  0.030 / 0.030
G11     72.0           41.1               10.8 +/-    1.19      15.4 +/-    1.19  0.030 / 0.020
G13     297.0          35.2               12.5 +/-    2.96      19.8 +/-    2.96  0.070 / 0.140
G17     213.7          48.5               13.6 +/-    0.71      17.5 +/-    0.71  0.080 / 0.160
G18     66.2           24.4               11.0 +/-    1.03      21.8 +/-    1.03  0.030 / 0.050
G19     213.9          23.8               15.9 +/-    0.78      32.0 +/-    0.78  0.040 / 0.040
G28     345.6          61.8               10.0 +/-    0.51      11.2 +/-    0.51  0.030 / 0.040
G30     98.2           76.7               11.6 +/-    0.54      11.9 +/-    0.54  0.030 / 0.040