PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-16:27:50
G01     50.5           25.6                6.9 +/-    1.87      13.2 +/-    1.87  0.050 / 0.050
G06     177.7          23.1               11.3 +/-    2.84      23.1 +/-    2.84  0.040 / 0.050
G07     144.9          9.8                10.1 +/-    2.68      28.4 +/-    2.68  0.290 / 0.340
G11     44.7           16.3                6.9 +/-    2.52      16.6 +/-    2.52  0.130 / 0.280
G13     250.7          31.8               11.0 +/-    3.15      18.6 +/-    3.15  0.170 / 0.460
G15     284.5          15.9               11.2 +/-    1.64      27.3 +/-    1.64  0.230 / 0.410
G17     295.2          78.5               10.6 +/-    0.51      10.8 +/-    0.51  0.030 / 0.020
G19     244.1          60.0                9.9 +/-    0.82      11.2 +/-    0.82  0.020 / 0.020
G28     41.9           56.8                8.8 +/-    1.26      10.3 +/-    1.26  0.100 / 0.150
G30     148.5          40.6                9.2 +/-    0.71      13.2 +/-    0.71  0.110 / 0.140