PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-03:27:50
G01     318.2          19.5                9.1 +/-    2.92      20.2 +/-    2.92  0.030 / 0.030
G08     254.1          12.2               10.3 +/-    2.31      27.3 +/-    2.31  0.030 / 0.030
G10     81.5           53.2                8.7 +/-    0.69      10.6 +/-    0.69  0.040 / 0.060
G11     299.8          25.6                9.8 +/-    1.55      19.0 +/-    1.55  0.040 / 0.060
G14     308.0          71.6                8.7 +/-    0.46       9.1 +/-    0.46  0.130 / 0.380
G18     102.8          28.8                8.0 +/-    1.22      14.3 +/-    1.22  0.180 / 0.380
G22     301.3          11.9                8.2 +/-    2.21      21.8 +/-    2.21  0.220 / 0.370
G31     176.5          43.2               11.9 +/-    1.50      16.5 +/-    1.50  0.220 / 0.430
G32     6.6            67.2                8.8 +/-    0.56       9.5 +/-    0.56  0.040 / 0.070