PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-09:42:50
G10     243.2          21.0                4.8 +/-    3.86      10.2 +/-    3.86  0.110 / 0.240
G13     62.5           33.5                3.6 +/-    1.09       5.8 +/-    1.09  0.190 / 0.240
G15     104.3          57.1                4.9 +/-    0.91       5.7 +/-    0.91  0.080 / 0.120
G16     308.6          13.0                3.1 +/-    2.61       8.0 +/-    2.61  0.060 / 0.110
G20     258.9          44.9                5.8 +/-    2.77       7.8 +/-    2.77  0.040 / 0.040
G21     329.9          57.6                3.2 +/-    0.72       3.7 +/-    0.72  0.040 / 0.040
G26     282.9          17.2                4.4 +/-    1.20      10.4 +/-    1.20  0.030 / 0.040
G29     158.0          56.0                6.8 +/-    0.70       8.0 +/-    0.70  0.030 / 0.030