PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-07:28:00
G01     227.1          18.0                7.1 +/-    3.30      16.4 +/-    3.30  0.080 / 0.110
G03     293.9          64.5                1.5 +/-    0.93       1.7 +/-    0.93  0.070 / 0.110
G14     86.3           23.5                1.9 +/-    1.79       3.9 +/-    1.79  0.040 / 0.040
G16     150.0          43.2                6.7 +/-    1.31       9.3 +/-    1.31  0.030 / 0.040
G22     218.4          72.0                5.3 +/-    1.10       5.6 +/-    1.10  0.160 / 0.480
G23     305.4          34.9                4.3 +/-    1.13       6.8 +/-    1.13  0.140 / 0.350
G26     103.5          54.3                4.4 +/-    0.49       5.3 +/-    0.49  0.040 / 0.080
G31     44.2           34.2                0.9 +/-    1.84       1.5 +/-    1.84  0.040 / 0.070