PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-15:28:10
G02     227.7          67.0                7.7 +/-    1.66       8.3 +/-    1.66  0.060 / 0.090
G06     43.4           64.1                7.1 +/-    1.02       7.8 +/-    1.02  0.060 / 0.120
G12     320.5          45.0                7.7 +/-    1.35      10.4 +/-    1.35  0.060 / 0.060
G17     63.3           28.9                6.1 +/-    0.64      11.0 +/-    0.64  0.050 / 0.080
G19     51.3           41.2                7.7 +/-    0.85      11.0 +/-    0.85  0.090 / 0.420
G24     253.8          37.9               11.3 +/-    0.82      17.0 +/-    0.82  0.080 / 0.520
G28     127.2          12.0                7.3 +/-    4.67      19.6 +/-    4.67  0.040 / 0.040