PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-06:12:40
G01     79.5           33.2                3.2 +/-    1.16       5.2 +/-    1.16  0.030 / 0.040
G07     132.7          37.0                6.5 +/-    0.66      10.0 +/-    0.66  0.030 / 0.050
G11     60.1           35.3                4.1 +/-    1.16       6.5 +/-    1.16  0.120 / 0.160
G13     285.4          37.0                5.4 +/-    1.04       8.3 +/-    1.04  0.080 / 0.200
G15     308.4          13.8                1.2 +/-    2.14       3.0 +/-    2.14  0.030 / 0.030
G17     223.1          63.5                6.7 +/-    0.97       7.4 +/-    0.97  0.040 / 0.040
G19     219.3          36.6                6.6 +/-    1.94      10.2 +/-    1.94  0.040 / 0.070
G28     7.7            60.5                3.8 +/-    1.46       4.3 +/-    1.46  0.060 / 0.070
G30     125.5          67.2                5.9 +/-    0.45       6.4 +/-    0.45  0.050 / 0.070