PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-20:12:40
G03     193.9          32.8               14.1 +/-    1.63      23.3 +/-    1.63  0.150 / 0.170
G07     276.4          28.8               13.3 +/-    1.27      23.9 +/-    1.27  0.160 / 0.220
G08     153.0          15.3               19.3 +/-    3.12      47.7 +/-    3.12  0.060 / 0.110
G09     319.0          47.4               12.1 +/-    1.52      15.8 +/-    1.52  0.060 / 0.110
G16     50.9           52.8               12.3 +/-    0.61      15.1 +/-    0.61  0.140 / 0.340
G22     180.4          17.9               16.1 +/-    1.68      37.4 +/-    1.68  0.140 / 0.330
G23     22.0           80.8               11.9 +/-    0.95      12.1 +/-    0.95  0.040 / 0.040
G26     43.3           23.3               10.0 +/-    1.75      20.4 +/-    1.75  0.050 / 0.050
G27     114.1          26.3               13.8 +/-    0.94      26.2 +/-    0.94  0.030 / 0.030