PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-03:42:40
G02     83.3           13.4                4.2 +/-    1.63      10.9 +/-    1.63  0.050 / 0.110
G05     44.7           31.9                2.4 +/-    0.41       4.1 +/-    0.41  0.050 / 0.120
G13     98.7           32.3                9.2 +/-    0.90      15.3 +/-    0.90  0.070 / 0.130
G15     144.0          38.1               11.1 +/-    1.23      16.6 +/-    1.23  0.080 / 0.130
G20     233.9          22.4                8.8 +/-    0.89      18.2 +/-    0.89  0.180 / 0.250
G21     297.5          36.4                7.6 +/-    0.82      11.8 +/-    0.82  0.240 / 0.330
G25     208.7          26.6                7.8 +/-    0.67      14.8 +/-    0.67  0.050 / 0.080
G26     308.2          16.5                4.5 +/-    2.18      10.8 +/-    2.18  0.050 / 0.090
G29     65.2           85.1                6.6 +/-    1.42       6.6 +/-    1.42  0.050 / 0.150