PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-05:42:50
G01     80.3           33.2                6.2 +/-    1.14      10.2 +/-    1.14  0.050 / 0.040
G07     132.2          37.7                9.2 +/-    0.65      13.9 +/-    0.65  0.030 / 0.030
G11     60.8           35.8                6.4 +/-    0.94      10.0 +/-    0.94  0.050 / 0.050
G13     286.1          37.0                8.4 +/-    1.54      12.9 +/-    1.54  0.050 / 0.030
G15     308.8          13.6                2.4 +/-    1.85       6.2 +/-    1.85  0.070 / 0.080
G17     222.3          62.7               10.4 +/-    1.21      11.5 +/-    1.21  0.050 / 0.080
G19     218.9          35.9                9.0 +/-    1.67      14.0 +/-    1.67  0.110 / 0.160
G28     6.5            60.6                6.1 +/-    1.21       6.9 +/-    1.21  0.120 / 0.150
G30     124.6          67.5                9.2 +/-    0.38       9.9 +/-    0.38  0.050 / 0.070