PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-16:58:00
G01     310.4          30.4                7.2 +/-    1.86      12.4 +/-    1.86  0.030 / 0.050
G10     101.5          43.3               10.9 +/-    0.47      15.0 +/-    0.47  0.040 / 0.040
G11     288.6          27.0                7.4 +/-    1.26      13.8 +/-    1.26  0.080 / 0.170
G14     344.2          68.8                7.4 +/-    0.74       7.9 +/-    0.74  0.100 / 0.180
G22     308.3          23.4                5.3 +/-    2.37      10.8 +/-    2.37  0.050 / 0.150
G25     86.6           15.4               11.0 +/-    1.11      27.0 +/-    1.11  0.070 / 0.190
G31     169.7          60.7               13.1 +/-    0.89      14.7 +/-    0.89  0.050 / 0.060
G32     32.1           55.1                7.3 +/-    0.61       8.7 +/-    0.61  0.050 / 0.040