PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/28-18:58:10
G01     315.5          24.5               11.3 +/-    2.16      22.3 +/-    2.16  0.180 / 0.260
G10     91.3           48.9               12.0 +/-    1.16      15.3 +/-    1.16  0.180 / 0.300
G11     296.2          25.7               11.5 +/-    1.32      22.2 +/-    1.32  0.040 / 0.040
G14     323.3          70.8               12.1 +/-    0.55      12.7 +/-    0.55  0.050 / 0.050
G18     109.2          21.5               11.5 +/-    1.53      24.4 +/-    1.53  0.160 / 0.170
G22     304.5          16.2               10.3 +/-    2.61      25.0 +/-    2.61  0.180 / 0.190
G25     93.9           12.2               14.2 +/-    3.40      37.7 +/-    3.40  0.060 / 0.040
G31     175.1          50.3               13.6 +/-    0.82      17.1 +/-    0.82  0.060 / 0.040
G32     20.3           61.8               11.7 +/-    0.68      13.1 +/-    0.68  0.060 / 0.030