PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-16:27:50
G01     107.2          24.7                9.8 +/-    1.18      19.3 +/-    1.18  0.050 / 0.080
G07     108.9          53.5               10.6 +/-    0.31      12.9 +/-    0.31  0.040 / 0.060
G08     42.0           21.7                7.0 +/-    1.28      14.8 +/-    1.28  0.030 / 0.050
G09     175.8          15.8               13.1 +/-    1.27      31.8 +/-    1.27  0.030 / 0.040
G11     89.0           43.2                9.9 +/-    1.01      13.7 +/-    1.01  0.070 / 0.140
G13     309.8          29.0                7.8 +/-    0.98      14.0 +/-    0.98  0.080 / 0.130
G17     204.9          35.9               13.4 +/-    2.02      20.9 +/-    2.02  0.040 / 0.070
G18     79.7           23.8                8.7 +/-    0.80      17.5 +/-    0.80  0.040 / 0.090
G28     306.0          58.5                9.7 +/-    0.68      11.2 +/-    0.68  0.150 / 0.260
G30     36.4           78.2               10.2 +/-    0.58      10.4 +/-    0.58  0.140 / 0.280