PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-06:43:00
G01     115.4          20.4                4.9 +/-    1.62      10.7 +/-    1.62  0.140 / 0.250
G07     92.3           63.0                3.9 +/-    0.75       4.4 +/-    0.75  0.100 / 0.220
G08     42.9           25.6                1.9 +/-    2.73       3.7 +/-    2.73  0.030 / 0.040
G09     173.6          18.3                4.9 +/-    1.36      11.3 +/-    1.36  0.030 / 0.030
G11     99.0           41.4                5.9 +/-    0.73       8.4 +/-    0.73  0.130 / 0.190
G13     315.4          23.0                1.7 +/-    1.47       3.5 +/-    1.47  0.110 / 0.170
G17     201.8          31.1                4.3 +/-    1.30       7.3 +/-    1.30  0.090 / 0.200
G18     87.5           21.9                4.5 +/-    1.38       9.4 +/-    1.38  0.180 / 0.180
G28     297.9          58.0                4.0 +/-    1.03       4.6 +/-    1.03  0.040 / 0.030
G30     350.1          71.0                3.3 +/-    0.47       3.5 +/-    0.47  0.040 / 0.030