PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-00:43:10
G05     47.7           19.0                6.4 +/-    0.94      14.5 +/-    0.94  0.040 / 0.070
G10     233.8          11.0               -2.1 +/-   39.64      -5.8 +/-   39.64  0.040 / 0.100
G13     79.4           35.5                8.2 +/-    0.86      12.9 +/-    0.86  0.210 / 0.320
G15     127.9          50.3               10.3 +/-    0.80      12.9 +/-    0.80  0.180 / 0.320
G20     245.2          34.2               11.9 +/-    1.54      19.1 +/-    1.54  0.260 / 0.340
G21     310.2          44.5                7.2 +/-    1.50       9.7 +/-    1.50  0.240 / 0.280
G25     201.5          14.3               10.1 +/-    1.15      25.6 +/-    1.15  0.050 / 0.110
G26     292.2          19.9                8.2 +/-    1.41      18.1 +/-    1.41  0.050 / 0.100
G29     147.6          74.6                9.1 +/-    0.80       9.4 +/-    0.80  0.050 / 0.060