PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/22-10:27:40
G02     201.0          17.3                5.5 +/-    1.41      12.9 +/-    1.41  0.190 / 0.460
G06     170.7          52.8               10.5 +/-    0.90      12.8 +/-    0.90  0.180 / 0.920
G13     227.7          14.0                4.5 +/-    2.02      11.6 +/-    2.02  0.100 / 0.190
G17     23.4           59.1                7.4 +/-    0.47       8.4 +/-    0.47  0.120 / 0.200
G19     306.2          70.1                6.6 +/-    0.67       7.0 +/-    0.67  0.080 / 0.110
G24     308.9          31.6                4.7 +/-    2.29       7.9 +/-    2.29  0.090 / 0.110
G28     85.5           41.6                9.1 +/-    0.66      13.0 +/-    0.66  0.040 / 0.040
G30     157.6          17.3                8.0 +/-    1.46      18.8 +/-    1.46  0.040 / 0.050