PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/24-13:42:50
G01     77.4           32.6                5.3 +/-    1.56       8.8 +/-    1.56  0.040 / 0.050
G07     133.1          33.4                7.1 +/-    0.66      11.6 +/-    0.66  0.040 / 0.050
G11     58.4           35.6                6.2 +/-    1.60       9.7 +/-    1.60  0.070 / 0.050
G13     281.6          38.8               10.4 +/-    1.88      15.4 +/-    1.88  0.070 / 0.050
G15     308.0          13.6                4.1 +/-    2.18      10.6 +/-    2.18  0.180 / 0.230
G17     222.3          59.5                9.4 +/-    1.83      10.8 +/-    1.83  0.120 / 0.250
G18     53.5           20.6                6.7 +/-    3.82      14.4 +/-    3.82  0.090 / 0.110
G19     218.8          37.5                8.6 +/-    1.63      13.0 +/-    1.63  0.080 / 0.080
G28     354.6          61.5                6.9 +/-    0.80       7.7 +/-    0.80  0.050 / 0.110
G30     127.7          67.1                7.6 +/-    0.72       8.1 +/-    0.72  0.080 / 0.120