PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/26-08:27:50
G01     43.1           18.8                2.9 +/-    3.06       6.6 +/-    3.06  0.040 / 0.060
G06     178.9          32.1                5.2 +/-    1.51       8.7 +/-    1.51  0.040 / 0.050
G13     242.2          24.4                5.3 +/-    1.58      10.4 +/-    1.58  0.170 / 0.320
G15     273.8          13.7                2.5 +/-    1.71       6.4 +/-    1.71  0.200 / 0.370
G17     357.9          72.3                4.5 +/-    0.35       4.7 +/-    0.35  0.110 / 0.270
G19     270.7          68.6                4.0 +/-    0.61       4.2 +/-    0.61  0.140 / 0.250
G24     318.1          15.1                1.2 +/-    3.06       2.9 +/-    3.06  0.030 / 0.020
G28     67.8           48.0                4.6 +/-    2.42       5.9 +/-    2.42  0.030 / 0.020
G30     153.2          30.3                6.6 +/-    2.20      11.5 +/-    2.20  0.060 / 0.070