PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-18:42:50
G02     218.6          61.0               16.7 +/-    0.84      18.8 +/-    0.84  0.110 / 0.470
G06     51.3           70.4               13.6 +/-    0.38      14.3 +/-    0.38  0.090 / 0.430
G12     320.3          41.5               11.5 +/-    1.55      16.3 +/-    1.55  0.050 / 0.050
G17     59.4           30.9               11.3 +/-    1.25      19.5 +/-    1.25  0.050 / 0.050
G19     39.1           49.8               12.1 +/-    0.86      15.3 +/-    0.86  0.070 / 0.090
G24     260.4          41.1               14.5 +/-    1.11      20.7 +/-    1.11  0.080 / 0.080
G28     124.2          11.9               13.4 +/-    2.50      36.0 +/-    2.50  0.050 / 0.060