PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-16:42:50
G01     45.2           21.0                5.6 +/-   15.03      12.0 +/-   15.03  0.150 / 0.240
G06     176.2          32.1                7.2 +/-   16.89      12.1 +/-   16.89  0.150 / 0.240
G13     245.9          26.6               12.9 +/-    7.13      24.3 +/-    7.13  0.220 / 0.240
G15     281.0          14.1               12.9 +/-    1.06      32.9 +/-    1.06  0.270 / 0.310
G17     352.9          74.4               16.8 +/-   15.42      17.4 +/-   15.42  0.080 / 0.150
G19     262.3          67.1               -7.4 +/-   41.98      -8.0 +/-   41.98  0.060 / 0.200
G24     318.9          11.9                4.4 +/-   27.45      11.8 +/-   27.45  0.050 / 0.050
G28     62.2           50.0                7.5 +/-    4.60       9.4 +/-    4.60  0.070 / 0.090
G30     152.7          37.0               10.9 +/-    2.86      16.7 +/-    2.86  0.170 / 0.250