PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-19:13:10
G02     236.1          72.8               13.4 +/-    0.76      14.0 +/-    0.76  0.110 / 0.330
G05     172.4          14.7               16.0 +/-    1.92      40.1 +/-    1.92  0.100 / 0.330
G06     41.4           58.3               13.2 +/-    0.54      15.2 +/-    0.54  0.040 / 0.060
G12     322.4          53.5               14.2 +/-    1.36      17.2 +/-    1.36  0.040 / 0.070
G17     69.5           23.5               13.1 +/-    0.75      26.4 +/-    0.75  0.040 / 0.050
G19     53.0           42.0               12.5 +/-    0.30      17.7 +/-    0.30  0.030 / 0.050
G24     245.6          35.7               15.9 +/-    1.26      24.9 +/-    1.26  0.070 / 0.100
G25     316.3          11.1               -7.7 +/-   43.00     -21.0 +/-   43.00  0.060 / 0.090