PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-09:27:50
G01     219.0          10.7                4.9 +/-    1.81      13.6 +/-    1.81  0.150 / 0.350
G03     254.2          71.2                3.3 +/-    0.84       3.5 +/-    0.84  0.240 / 0.340
G09     298.9          12.3                4.6 +/-    2.63      12.2 +/-    2.63  0.030 / 0.050
G14     93.8           18.8                3.3 +/-    1.25       7.6 +/-    1.25  0.040 / 0.060
G16     138.1          52.6                5.3 +/-    1.09       6.5 +/-    1.09  0.030 / 0.050
G22     200.1          61.6                5.5 +/-    0.69       6.1 +/-    0.69  0.030 / 0.040
G23     316.3          46.6                1.4 +/-    1.21       1.9 +/-    1.21  0.100 / 0.200
G26     81.6           54.2                4.7 +/-    1.12       5.7 +/-    1.12  0.090 / 0.230
G31     49.5           23.7                1.9 +/-    0.48       3.9 +/-    0.48  0.070 / 0.090