PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-20:27:30
G02     11.3           69.7                7.0 +/-    0.99       7.4 +/-    0.99  0.060 / 0.090
G05     157.4          45.6               10.4 +/-    0.80      13.9 +/-    0.80  0.060 / 0.120
G06     45.0           29.9                6.9 +/-    1.02      12.1 +/-    1.02  0.040 / 0.050
G12     277.1          78.6                6.4 +/-    0.49       6.5 +/-    0.49  0.050 / 0.050
G19     85.7           18.9                8.0 +/-    2.82      18.1 +/-    2.82  0.190 / 0.400
G24     220.0          14.5               17.6 +/-    2.55      44.2 +/-    2.55  0.180 / 0.490
G25     313.4          38.9                6.5 +/-    0.77       9.6 +/-    0.77  0.150 / 0.160
G29     295.0          17.1                8.3 +/-    2.04      19.5 +/-    2.04  0.090 / 0.170