PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-20:43:00
G02     349.1          77.2                6.8 +/-    0.59       6.9 +/-    0.59  0.130 / 0.120
G05     162.8          35.8               11.5 +/-    1.19      18.0 +/-    1.19  0.130 / 0.140
G06     41.6           38.8                7.5 +/-    1.04      11.2 +/-    1.04  0.040 / 0.040
G12     309.9          70.9                7.7 +/-    0.67       8.1 +/-    0.67  0.040 / 0.030
G17     86.6           11.5                8.4 +/-    1.22      22.8 +/-    1.22  0.180 / 0.190
G19     77.0           24.9                9.8 +/-    1.15      19.2 +/-    1.15  0.120 / 0.220
G24     226.9          21.2               12.1 +/-    1.35      25.9 +/-    1.35  0.030 / 0.040
G25     316.7          30.1                8.0 +/-    1.13      14.0 +/-    1.13  0.030 / 0.040
G29     287.8          11.3                0.8 +/-   25.08       2.1 +/-   25.08  0.090 / 0.130