PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-14:28:00
G01     76.7           33.0                6.3 +/-    1.81      10.4 +/-    1.81  0.110 / 0.240
G07     134.1          32.6                8.3 +/-    1.31      13.8 +/-    1.31  0.150 / 0.300
G11     56.5           31.5                6.3 +/-    1.08      10.7 +/-    1.08  0.080 / 0.100
G13     283.5          36.9                8.6 +/-    2.09      13.1 +/-    2.09  0.070 / 0.100
G15     309.5          12.7                6.4 +/-    1.98      16.9 +/-    1.98  0.030 / 0.020
G17     225.9          67.1                9.3 +/-    0.78      10.0 +/-    0.78  0.030 / 0.020
G19     220.6          39.2                9.2 +/-    2.03      13.6 +/-    2.03  0.070 / 0.070
G28     10.4           60.2                7.5 +/-    0.73       8.5 +/-    0.73  0.070 / 0.080
G30     127.0          69.1                8.0 +/-    0.38       8.5 +/-    0.38  0.080 / 0.100