PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/05-06:43:10
G01     71.3           32.9                4.0 +/-    1.16       6.6 +/-    1.16  0.030 / 0.040
G07     137.1          30.8                7.0 +/-    0.69      12.1 +/-    0.69  0.040 / 0.050
G11     54.4           30.9                4.1 +/-    1.57       7.1 +/-    1.57  0.080 / 0.190
G13     276.7          37.0                4.2 +/-    1.38       6.4 +/-    1.38  0.080 / 0.210
G15     302.6          15.6                2.2 +/-    1.38       5.3 +/-    1.38  0.040 / 0.020
G17     233.5          69.9                7.3 +/-    0.42       7.7 +/-    0.42  0.030 / 0.030
G19     224.0          43.0                7.0 +/-    2.12       9.7 +/-    2.12  0.060 / 0.090
G28     20.1           59.1                4.4 +/-    2.32       5.0 +/-    2.32  0.060 / 0.080
G30     134.5          61.0                7.9 +/-    0.57       8.9 +/-    0.57  0.050 / 0.070