PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-00:12:30
G02     226.7          70.6               10.4 +/-    0.53      10.9 +/-    0.53  0.030 / 0.060
G05     173.5          11.0                1.4 +/-   32.60       4.0 +/-   32.60  0.030 / 0.050
G06     44.0           65.3                9.1 +/-    0.42       9.9 +/-    0.42  0.160 / 0.270
G12     320.9          44.9               10.2 +/-    0.59      13.8 +/-    0.59  0.210 / 0.380
G17     63.0           30.0                9.7 +/-    1.39      16.9 +/-    1.39  0.020 / 0.030
G19     48.8           44.0               10.5 +/-    1.10      14.3 +/-    1.10  0.030 / 0.030
G24     253.4          38.4               12.1 +/-    1.71      18.0 +/-    1.71  0.060 / 0.090