PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-05:27:50
G05     48.0           18.1                2.6 +/-    2.37       6.0 +/-    2.37  0.050 / 0.070
G10     234.2          11.2              -10.9 +/-   26.88     -29.6 +/-   26.88  0.060 / 0.070
G13     78.8           35.8                6.9 +/-    1.45      10.8 +/-    1.45  0.080 / 0.110
G15     126.5          50.7                8.1 +/-    0.80      10.2 +/-    0.80  0.070 / 0.100
G20     245.7          35.0                8.2 +/-    2.11      13.0 +/-    2.11  0.180 / 0.460
G21     312.6          46.8                5.7 +/-    0.90       7.4 +/-    0.90  0.130 / 0.550
G25     199.9          13.0                3.9 +/-    8.42      10.3 +/-    8.42  0.260 / 0.350
G26     293.6          19.1                3.6 +/-    1.17       8.0 +/-    1.17  0.260 / 0.460
G29     147.3          70.4                6.8 +/-    1.04       7.2 +/-    1.04  0.130 / 0.210