PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-12:28:00
G01     125.4          12.8                2.0 +/-    4.79       5.4 +/-    4.79  0.040 / 0.080
G07     64.9           67.3                3.6 +/-    0.49       3.9 +/-    0.49  0.040 / 0.040
G08     48.5           36.3               -3.8 +/-   13.07      -6.0 +/-   13.07  0.040 / 0.040
G09     175.9          32.0                0.5 +/-   13.99       0.9 +/-   13.99  0.030 / 0.040
G11     113.5          35.0               11.3 +/-   11.23      17.9 +/-   11.23  0.110 / 0.440
G13     321.4          11.1               -4.0 +/-   13.13     -10.9 +/-   13.13  0.110 / 0.460
G17     199.4          18.9                9.0 +/-   15.13      20.4 +/-   15.13  0.140 / 0.260
G28     279.5          53.8              -33.1 +/-   56.48     -40.0 +/-   56.48  0.110 / 0.250
G30     332.5          60.0                3.3 +/-    1.16       3.8 +/-    1.16  0.100 / 0.330