PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-19:58:10
G01     77.5           33.3               15.4 +/-    1.09      25.2 +/-    1.09  0.090 / 0.160
G07     133.9          36.6               18.0 +/-    0.66      27.7 +/-    0.66  0.100 / 0.240
G11     58.9           35.2               15.1 +/-    1.06      23.8 +/-    1.06  0.030 / 0.030
G13     281.9          37.7               13.8 +/-    1.21      20.9 +/-    1.21  0.040 / 0.030
G15     307.6          13.8               10.5 +/-    2.57      26.9 +/-    2.57  0.040 / 0.050
G17     224.7          60.1               16.7 +/-    1.79      18.9 +/-    1.79  0.040 / 0.070
G18     54.1           21.0               13.6 +/-    4.04      29.2 +/-    4.04  0.040 / 0.050
G19     220.4          35.6               19.7 +/-    2.14      30.9 +/-    2.14  0.050 / 0.050
G28     10.0           60.4               14.7 +/-    1.42      16.7 +/-    1.42  0.060 / 0.100
G30     128.6          66.0               18.3 +/-    0.60      19.8 +/-    0.60  0.060 / 0.090