PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-13:13:00
G01     84.5           32.6                5.9 +/-    0.39       9.8 +/-    0.39  0.050 / 0.100
G07     129.5          38.7                6.6 +/-    0.45       9.8 +/-    0.45  0.040 / 0.110
G11     62.4           35.4                3.8 +/-    0.49       6.0 +/-    0.49  0.030 / 0.030
G13     291.5          35.9                6.1 +/-    0.84       9.5 +/-    0.84  0.020 / 0.020
G15     313.9          10.7               -3.5 +/-   18.39      -9.5 +/-   18.39  0.050 / 0.070
G17     218.2          60.9                7.9 +/-    0.85       8.9 +/-    0.85  0.050 / 0.070
G19     216.7          33.1                6.1 +/-    0.87      10.1 +/-    0.87  0.090 / 0.080
G28     358.6          61.2                5.1 +/-    0.61       5.7 +/-    0.61  0.090 / 0.100
G30     113.4          74.4                6.1 +/-    1.18       6.3 +/-    1.18  0.040 / 0.040