PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-01:43:00
G10     259.2          32.3               13.9 +/-    2.53      23.2 +/-    2.53  0.090 / 0.090
G13     46.7           25.1               10.7 +/-    2.80      20.8 +/-    2.80  0.060 / 0.090
G15     72.5           55.9                8.9 +/-    0.80      10.4 +/-    0.80  0.040 / 0.080
G16     287.5          13.5               11.2 +/-    1.27      28.8 +/-    1.27  0.050 / 0.110
G18     283.1          60.0               13.5 +/-    0.76      15.4 +/-    0.76  0.040 / 0.100
G20     50.2           39.1                7.9 +/-    0.57      11.7 +/-    0.57  0.040 / 0.090
G21     346.7          66.9                8.7 +/-    1.18       9.3 +/-    1.18  0.160 / 0.410
G26     260.4          11.4               14.2 +/-    2.44      38.5 +/-    2.44  0.150 / 0.420
G27     320.7          14.4                9.0 +/-    4.64      22.8 +/-    4.64  0.140 / 0.260
G29     166.5          37.4               13.0 +/-    1.73      19.7 +/-    1.73  0.150 / 0.240