PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-04:58:10
G01     105.7          26.3                8.0 +/-    0.79      15.1 +/-    0.79  0.040 / 0.050
G07     109.1          56.7                8.3 +/-    0.44       9.7 +/-    0.44  0.030 / 0.050
G08     41.8           19.0                2.8 +/-    1.52       6.4 +/-    1.52  0.110 / 0.270
G09     175.0          12.9                9.1 +/-    1.93      23.7 +/-    1.93  0.090 / 0.240
G11     88.0           42.4                7.4 +/-    0.74      10.4 +/-    0.74  0.060 / 0.150
G13     309.5          28.3                4.0 +/-    0.80       7.2 +/-    0.80  0.050 / 0.160
G17     206.3          40.2               11.5 +/-    1.62      16.7 +/-    1.62  0.070 / 0.160
G19     209.3          15.3                7.0 +/-    5.47      17.2 +/-    5.47  0.080 / 0.140
G28     322.2          61.3                5.5 +/-    0.56       6.2 +/-    0.56  0.030 / 0.030
G30     39.1           78.5                5.7 +/-    0.94       5.8 +/-    0.94  0.030 / 0.050