PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-16:27:30
G02     241.1          74.9               12.6 +/-    0.30      13.0 +/-    0.30  0.030 / 0.060
G05     175.1          13.6               15.1 +/-    2.39      38.8 +/-    2.39  0.040 / 0.060
G06     40.6           58.4               13.4 +/-    0.72      15.4 +/-    0.72  0.070 / 0.110
G12     321.6          52.8               14.5 +/-    0.72      17.7 +/-    0.72  0.070 / 0.110
G17     73.3           19.5               12.5 +/-    1.11      27.8 +/-    1.11  0.140 / 0.490
G19     59.8           36.4               12.6 +/-    0.70      19.5 +/-    0.70  0.180 / 0.290
G24     246.4          34.7               12.2 +/-    0.83      19.4 +/-    0.83  0.080 / 0.300
G25     317.0          16.2               11.7 +/-    4.34      28.1 +/-    4.34  0.100 / 0.230