PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-21:28:00
G10     308.4          55.7               10.2 +/-    0.75      12.1 +/-    0.75  0.070 / 0.090
G14     211.8          14.7               15.5 +/-    1.57      38.8 +/-    1.57  0.080 / 0.080
G15     45.6           23.4                8.5 +/-    0.68      17.2 +/-    0.68  0.040 / 0.040
G20     8.7            64.4               11.6 +/-    0.41      12.7 +/-    0.41  0.040 / 0.060
G21     110.8          70.9               13.7 +/-    1.15      14.4 +/-    1.15  0.270 / 0.730
G24     92.8           28.7               12.6 +/-    1.55      22.7 +/-    1.55  0.210 / 0.620
G27     294.4          36.5               12.5 +/-    1.02      19.2 +/-    1.02  0.060 / 0.130
G32     212.6          38.0               14.5 +/-    1.01      21.9 +/-    1.01  0.050 / 0.150