PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-14:57:40
G01     67.0           32.1               10.9 +/-    0.89      18.3 +/-    0.89  0.080 / 0.250
G07     138.9          25.1                9.4 +/-    1.44      18.4 +/-    1.44  0.100 / 0.250
G11     50.7           25.9                8.2 +/-    2.26      15.8 +/-    2.26  0.070 / 0.110
G13     273.0          36.4               11.8 +/-    1.67      18.3 +/-    1.67  0.090 / 0.110
G15     302.6          14.7                6.8 +/-    2.31      17.0 +/-    2.31  0.030 / 0.040
G17     242.7          74.4               11.6 +/-    0.38      12.0 +/-    0.38  0.030 / 0.030
G19     226.9          47.0               12.0 +/-    2.13      15.8 +/-    2.13  0.100 / 0.150
G28     25.1           58.4               14.0 +/-    1.09      16.2 +/-    1.09  0.050 / 0.130
G30     137.7          61.2               11.6 +/-    0.64      13.0 +/-    0.64  0.030 / 0.030