PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-09:27:50
G01     39.7           13.9                2.1 +/-    1.15       5.3 +/-    1.15  0.050 / 0.100
G02     199.1          11.9                4.6 +/-    2.86      12.2 +/-    2.86  0.050 / 0.080
G06     177.4          39.8               10.0 +/-    1.13      14.6 +/-    1.13  0.040 / 0.040
G13     236.5          20.0                5.5 +/-    1.52      12.1 +/-    1.52  0.030 / 0.030
G15     267.9          11.4                5.1 +/-    2.71      13.7 +/-    2.71  0.190 / 0.300
G17     11.3           66.7                4.9 +/-    0.65       5.3 +/-    0.65  0.150 / 0.270
G19     292.3          71.4                6.5 +/-    0.87       6.8 +/-    0.87  0.120 / 0.310
G24     316.1          20.6                3.8 +/-    1.79       8.2 +/-    1.79  0.140 / 0.410
G28     76.6           44.7                5.7 +/-    0.51       7.7 +/-    0.51  0.070 / 0.070
G30     155.2          24.0                8.6 +/-    2.20      17.3 +/-    2.20  0.050 / 0.070