PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-15:12:40
G02     17.9           67.3                7.9 +/-    0.50       8.5 +/-    0.50  0.030 / 0.060
G05     159.8          46.4               14.6 +/-    1.16      19.3 +/-    1.16  0.020 / 0.060
G06     46.3           29.4                7.5 +/-    0.75      13.2 +/-    0.75  0.180 / 0.360
G12     253.6          79.2               10.1 +/-    0.94      10.3 +/-    0.94  0.100 / 0.360
G19     89.1           17.0               12.5 +/-    1.44      29.5 +/-    1.44  0.100 / 0.400
G20     197.9          12.2               15.7 +/-    2.53      41.8 +/-    2.53  0.120 / 0.450
G24     219.2          13.1               12.5 +/-    2.74      32.5 +/-    2.74  0.020 / 0.030
G25     311.0          44.2                9.8 +/-    2.09      13.4 +/-    2.09  0.030 / 0.030
G29     299.3          22.3                6.5 +/-    1.30      13.5 +/-    1.30  0.050 / 0.080