PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-17:42:50
G02     218.2          60.9               11.9 +/-    1.15      13.4 +/-    1.15  0.050 / 0.050
G06     53.4           72.5                9.9 +/-    0.55      10.3 +/-    0.55  0.040 / 0.070
G12     318.3          36.3               10.1 +/-    1.14      15.7 +/-    1.14  0.120 / 0.220
G17     56.9           33.4                7.9 +/-    1.33      13.0 +/-    1.33  0.120 / 0.280
G19     42.5           46.7                9.8 +/-    1.38      12.9 +/-    1.38  0.040 / 0.080
G24     263.2          40.8               11.2 +/-    3.84      16.1 +/-    3.84  0.050 / 0.090
G28     122.2          17.5                9.0 +/-    1.23      21.0 +/-    1.23  0.050 / 0.090