PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-08:12:50
G01     235.7          26.8                7.9 +/-    1.96      14.8 +/-    1.96  0.040 / 0.030
G03     309.0          58.8                5.3 +/-    1.26       6.1 +/-    1.26  0.030 / 0.030
G14     73.6           32.7                4.6 +/-    1.69       7.6 +/-    1.69  0.040 / 0.050
G16     156.2          30.7                7.6 +/-    1.27      13.2 +/-    1.27  0.040 / 0.060
G18     210.3          16.0                5.1 +/-    1.71      12.4 +/-    1.71  0.200 / 0.130
G22     264.8          75.5                5.1 +/-    0.60       5.3 +/-    0.60  0.090 / 0.150
G23     298.8          31.1                6.3 +/-    1.59      10.8 +/-    1.59  0.070 / 0.120
G26     121.2          48.4                7.6 +/-    0.75       9.8 +/-    0.75  0.070 / 0.130
G31     41.9           43.4                3.7 +/-    1.15       5.1 +/-    1.15  0.160 / 0.220
G32     87.6           16.1                4.4 +/-    4.26      10.8 +/-    4.26  0.080 / 0.250