PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-14:28:10
G02     233.1          69.3                4.8 +/-    0.48       5.1 +/-    0.48  0.080 / 0.080
G05     175.1          11.8                3.0 +/-   17.78       8.0 +/-   17.78  0.110 / 0.090
G06     41.5           60.2                5.2 +/-    0.65       5.9 +/-    0.65  0.030 / 0.050
G12     322.2          52.2                5.1 +/-    0.74       6.3 +/-    0.74  0.040 / 0.060
G17     69.4           22.5                5.1 +/-    0.80      10.5 +/-    0.80  0.140 / 0.390
G19     50.2           44.0                5.5 +/-    1.09       7.5 +/-    1.09  0.150 / 0.420
G24     245.0          36.1                5.8 +/-    1.19       9.0 +/-    1.19  0.360 / 0.300
G25     316.1          12.1               -4.9 +/-   24.36     -13.0 +/-   24.36  0.160 / 0.280