PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/18-09:43:00
G08     267.4          18.5                5.9 +/-    1.30      13.4 +/-    1.30  0.200 / 0.400
G10     61.7           57.6                6.3 +/-    0.67       7.3 +/-    0.67  0.110 / 0.250
G11     311.4          17.5               -6.2 +/-    7.91     -14.5 +/-    7.91  0.040 / 0.050
G14     266.3          66.8                4.2 +/-    0.68       4.6 +/-    0.68  0.040 / 0.040
G18     312.0          33.4                2.4 +/-    1.53       3.9 +/-    1.53  0.040 / 0.030
G20     95.2           36.7                6.2 +/-    1.26       9.6 +/-    1.26  0.030 / 0.020
G21     154.4          14.3                3.3 +/-    5.25       8.4 +/-    5.25  0.030 / 0.030
G27     233.6          16.8                5.4 +/-    1.02      12.9 +/-    1.02  0.040 / 0.030
G31     178.9          29.1                3.8 +/-    1.46       6.9 +/-    1.46  0.150 / 0.240
G32     316.5          74.4                6.0 +/-    0.52       6.2 +/-    0.52  0.300 / 0.210