PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/15-09:28:00
G05     49.5           14.9                2.8 +/-    3.09       7.0 +/-    3.09  0.050 / 0.100
G10     237.2          14.6                3.9 +/-    1.72       9.8 +/-    1.72  0.070 / 0.090
G13     72.9           35.6                5.9 +/-    1.19       9.2 +/-    1.19  0.050 / 0.070
G15     120.4          53.6                5.8 +/-    0.49       7.0 +/-    0.49  0.050 / 0.080
G16     316.1          10.6               -4.8 +/-    6.60     -13.2 +/-    6.60  0.040 / 0.040
G20     250.0          38.6                6.1 +/-    1.54       9.0 +/-    1.54  0.040 / 0.040
G21     320.1          52.1                3.7 +/-    0.93       4.6 +/-    0.93  0.120 / 0.260
G29     152.6          65.8                7.2 +/-    0.36       7.8 +/-    0.36  0.170 / 0.260