PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-21:27:40
G08     316.1          14.7                5.5 +/-    1.64      13.9 +/-    1.64  0.040 / 0.040
G10     324.7          59.1                8.1 +/-    1.31       9.2 +/-    1.31  0.050 / 0.050
G14     215.1          23.1               14.2 +/-    1.93      29.1 +/-    1.93  0.170 / 0.320
G15     46.1           15.1                6.0 +/-    3.86      14.9 +/-    3.86  0.190 / 0.400
G20     28.9           61.8                8.2 +/-    1.02       9.1 +/-    1.02  0.140 / 0.220
G21     127.7          63.2               11.5 +/-    0.68      12.8 +/-    0.68  0.140 / 0.210
G24     82.1           30.5                9.4 +/-    1.25      16.3 +/-    1.25  0.150 / 0.360
G27     282.6          38.0               10.7 +/-    0.84      16.1 +/-    0.84  0.160 / 0.400
G32     218.1          47.3               11.3 +/-    1.04      14.8 +/-    1.04  0.060 / 0.070