PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-01:42:30
G01     319.7          15.4                8.3 +/-    2.24      20.4 +/-    2.24  0.060 / 0.060
G08     258.6          14.7               12.1 +/-    1.84      30.4 +/-    1.84  0.060 / 0.070
G10     73.6           55.7               10.7 +/-    0.33      12.6 +/-    0.33  0.030 / 0.040
G11     304.6          23.0               10.6 +/-    0.61      21.8 +/-    0.61  0.030 / 0.030
G14     291.4          70.8               11.1 +/-    0.44      11.7 +/-    0.44  0.160 / 0.280
G18     98.8           31.6                9.7 +/-    1.37      16.5 +/-    1.37  0.110 / 0.230
G31     178.4          36.8               14.5 +/-    0.94      22.3 +/-    0.94  0.040 / 0.040
G32     352.6          70.8               10.6 +/-    0.40      11.1 +/-    0.40  0.040 / 0.050