PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-11:43:00
G01     227.1          17.7                5.5 +/-    3.40      12.7 +/-    3.40  0.080 / 0.150
G03     287.3          68.0                4.5 +/-    0.99       4.8 +/-    0.99  0.070 / 0.160
G14     83.9           28.4                4.3 +/-    0.79       7.9 +/-    0.79  0.120 / 0.310
G16     145.0          45.3                8.1 +/-    0.77      10.9 +/-    0.77  0.110 / 0.360
G22     207.8          69.9                6.5 +/-    0.67       6.9 +/-    0.67  0.040 / 0.050
G23     309.0          40.0                4.5 +/-    0.86       6.6 +/-    0.86  0.040 / 0.040
G26     95.3           53.5                5.6 +/-    0.53       6.8 +/-    0.53  0.030 / 0.050
G31     45.6           30.8                3.2 +/-    0.67       5.6 +/-    0.67  0.030 / 0.040