PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/04-20:13:00
G01     319.7          15.7               14.6 +/-    2.03      35.6 +/-    2.03  0.050 / 0.070
G08     259.6          14.4               13.1 +/-    1.61      33.2 +/-    1.61  0.040 / 0.080
G10     74.9           55.2               13.3 +/-    0.57      15.8 +/-    0.57  0.070 / 0.050
G11     305.7          21.7               15.4 +/-    1.93      32.5 +/-    1.93  0.070 / 0.040
G14     290.0          70.2               12.7 +/-    0.64      13.4 +/-    0.64  0.150 / 0.220
G18     100.2          29.5               14.3 +/-    1.08      25.2 +/-    1.08  0.180 / 0.280
G31     178.6          37.2               14.7 +/-    1.38      22.4 +/-    1.38  0.030 / 0.020
G32     358.4          69.9               13.1 +/-    0.49      13.9 +/-    0.49  0.030 / 0.030