PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-07:13:10
G01     46.8           22.7                1.8 +/-    2.33       3.6 +/-    2.33  0.050 / 0.050
G06     180.4          25.6                3.9 +/-    1.44       7.5 +/-    1.44  0.030 / 0.040
G11     43.9           11.6                1.1 +/-    3.43       2.8 +/-    3.43  0.150 / 0.400
G13     247.5          27.9                7.3 +/-    2.03      13.4 +/-    2.03  0.150 / 0.420
G15     279.0          15.2                4.3 +/-    2.75      10.7 +/-    2.75  0.020 / 0.020
G17     339.5          76.4                3.8 +/-    0.49       3.9 +/-    0.49  0.020 / 0.020
G19     256.4          64.7                5.0 +/-    0.66       5.5 +/-    0.66  0.120 / 0.130
G28     59.9           50.6                2.7 +/-    0.41       3.3 +/-    0.41  0.080 / 0.170
G30     151.0          35.5                5.7 +/-    0.75       8.9 +/-    0.75  0.110 / 0.110