PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-15:58:10
G01     79.5           32.7                7.9 +/-    1.05      13.2 +/-    1.05  0.040 / 0.040
G07     132.2          33.5               11.6 +/-    0.70      18.9 +/-    0.70  0.050 / 0.050
G11     59.3           36.0                8.4 +/-    1.22      13.1 +/-    1.22  0.110 / 0.100
G13     283.7          38.7               13.4 +/-    2.58      19.9 +/-    2.58  0.060 / 0.100
G15     308.7          13.4                9.3 +/-    2.15      24.0 +/-    2.15  0.050 / 0.100
G17     220.8          59.8               12.6 +/-    1.62      14.3 +/-    1.62  0.050 / 0.090
G18     54.6           21.0                9.7 +/-    2.42      20.8 +/-    2.42  0.050 / 0.100
G19     218.0          35.7               12.9 +/-    0.95      20.2 +/-    0.95  0.070 / 0.110
G28     353.0          61.6               10.6 +/-    1.02      11.9 +/-    1.02  0.070 / 0.040
G30     125.9          66.5               11.3 +/-    0.49      12.2 +/-    0.49  0.080 / 0.040