PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-12:13:10
G01     218.6          10.1                5.3 +/-    1.42      14.8 +/-    1.42  0.040 / 0.060
G03     243.7          71.3                6.5 +/-    0.71       6.8 +/-    0.71  0.040 / 0.060
G09     299.4          12.9                4.9 +/-    3.68      12.9 +/-    3.68  0.160 / 0.390
G14     95.0           17.6                6.0 +/-    1.56      14.0 +/-    1.56  0.230 / 0.380
G16     139.6          52.9                7.3 +/-    1.40       8.9 +/-    1.40  0.110 / 0.260
G22     195.3          59.2                6.6 +/-    1.66       7.5 +/-    1.66  0.110 / 0.300
G23     315.6          45.6                4.3 +/-    1.89       5.7 +/-    1.89  0.030 / 0.050
G26     81.5           54.7                4.8 +/-    0.75       5.8 +/-    0.75  0.030 / 0.050
G31     49.6           23.8                4.3 +/-    1.27       8.7 +/-    1.27  0.050 / 0.060