PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-16:12:50
G01     56.8           29.0                6.5 +/-    1.25      11.6 +/-    1.25  0.050 / 0.070
G07     142.5          16.0                8.0 +/-    1.17      19.5 +/-    1.17  0.040 / 0.050
G11     46.8           21.9                7.2 +/-    3.20      15.2 +/-    3.20  0.210 / 0.370
G13     258.4          35.1               13.0 +/-    2.21      20.7 +/-    2.21  0.230 / 0.350
G15     291.0          16.5                9.7 +/-    1.52      23.4 +/-    1.52  0.130 / 0.160
G17     261.9          76.2               11.0 +/-    0.49      11.3 +/-    0.49  0.240 / 0.180
G18     40.0           10.6                5.5 +/-    1.72      15.3 +/-    1.72  0.030 / 0.020
G19     234.7          54.1               11.5 +/-    1.94      13.9 +/-    1.94  0.030 / 0.030
G28     30.1           58.7                8.5 +/-    1.09       9.7 +/-    1.09  0.100 / 0.370
G30     144.9          47.5                9.0 +/-    0.79      11.8 +/-    0.79  0.100 / 0.390