PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-13:58:00
G01     79.8           33.0                6.8 +/-    0.56      11.2 +/-    0.56  0.060 / 0.090
G07     132.4          35.0                7.5 +/-    0.84      11.8 +/-    0.84  0.050 / 0.080
G11     58.7           33.1                4.9 +/-    0.71       8.1 +/-    0.71  0.050 / 0.090
G13     286.7          36.6                5.8 +/-    1.83       8.9 +/-    1.83  0.070 / 0.120
G15     311.3          11.9                4.1 +/-    1.73      10.9 +/-    1.73  0.040 / 0.040
G17     222.4          64.7                8.8 +/-    0.86       9.6 +/-    0.86  0.030 / 0.070
G19     218.9          36.8                8.5 +/-    1.08      13.1 +/-    1.08  0.050 / 0.040
G28     5.7            60.6                5.5 +/-    0.61       6.2 +/-    0.61  0.040 / 0.040
G30     122.3          71.3                6.1 +/-    0.53       6.5 +/-    0.53  0.060 / 0.090