PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-19:12:30
G03     210.1          58.3               12.6 +/-    1.95      14.6 +/-    1.95  0.150 / 0.290
G07     255.4          13.6               12.1 +/-    1.73      31.1 +/-    1.73  0.120 / 0.350
G09     309.0          25.5                9.9 +/-    1.79      19.1 +/-    1.79  0.040 / 0.080
G16     102.3          64.6               13.8 +/-    0.61      15.1 +/-    0.61  0.040 / 0.080
G22     187.7          42.8               13.2 +/-    1.71      18.4 +/-    1.71  0.030 / 0.050
G23     330.2          59.5               12.2 +/-    0.89      13.9 +/-    0.89  0.040 / 0.040
G26     55.0           44.3               10.5 +/-    0.81      14.3 +/-    0.81  0.100 / 0.250
G31     58.4           11.1               10.6 +/-    3.27      28.8 +/-    3.27  0.090 / 0.220