PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/24-13:27:40
G01     80.6           32.9                5.6 +/-    1.36       9.2 +/-    1.36  0.050 / 0.070
G07     131.9          35.8                8.3 +/-    0.77      13.0 +/-    0.77  0.040 / 0.060
G11     59.3           33.6                7.2 +/-    1.13      11.8 +/-    1.13  0.170 / 0.260
G13     287.6          36.5                6.8 +/-    0.90      10.5 +/-    0.90  0.140 / 0.210
G15     311.5          11.9                4.0 +/-    1.41      10.8 +/-    1.41  0.030 / 0.020
G17     221.7          64.0                9.4 +/-    1.15      10.3 +/-    1.15  0.030 / 0.020
G19     218.6          36.1                8.5 +/-    1.69      13.1 +/-    1.69  0.050 / 0.080
G28     4.6            60.7                6.5 +/-    0.70       7.3 +/-    0.70  0.060 / 0.090
G30     121.1          71.7                8.4 +/-    0.74       8.8 +/-    0.74  0.040 / 0.050