PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-21:43:10
G10     279.3          44.8                8.2 +/-    1.52      11.1 +/-    1.52  0.140 / 0.150
G13     38.1           9.7                 6.4 +/-    2.63      18.1 +/-    2.63  0.090 / 0.150
G15     53.0           45.5                9.5 +/-    1.11      12.7 +/-    1.11  0.110 / 0.190
G20     320.0          64.0                9.1 +/-    0.66      10.0 +/-    0.66  0.140 / 0.200
G21     38.4           76.8               10.1 +/-    0.55      10.3 +/-    0.55  0.030 / 0.040
G24     108.6          20.3               11.2 +/-    1.24      24.5 +/-    1.24  0.030 / 0.040
G27     313.2          25.9                7.7 +/-    1.03      14.8 +/-    1.03  0.130 / 0.580
G29     168.7          20.8               11.1 +/-    1.38      23.9 +/-    1.38  0.070 / 0.360
G32     205.9          20.0               14.7 +/-    2.75      32.3 +/-    2.75  0.030 / 0.040