PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-01:42:40
G10     255.3          31.7               12.9 +/-    1.15      21.8 +/-    1.15  0.080 / 0.070
G13     48.7           25.8                8.6 +/-    1.94      16.5 +/-    1.94  0.130 / 0.060
G15     74.8           55.2               11.2 +/-    1.17      13.3 +/-    1.17  0.050 / 0.040
G16     292.1          14.8                7.6 +/-    1.51      18.9 +/-    1.51  0.050 / 0.040
G20     277.4          53.9               11.5 +/-    3.17      13.9 +/-    3.17  0.110 / 0.390
G21     341.1          63.6               10.1 +/-    0.58      11.2 +/-    0.58  0.090 / 0.410
G26     264.3          13.3               10.6 +/-    2.40      27.3 +/-    2.40  0.120 / 0.210
G29     164.1          42.6               11.7 +/-    0.67      16.3 +/-    0.67  0.160 / 0.170