PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-06:57:50
G01     48.0           23.8                2.5 +/-    1.73       5.1 +/-    1.73  0.040 / 0.050
G06     180.8          23.7                3.5 +/-    1.74       7.0 +/-    1.74  0.050 / 0.060
G11     44.2           13.1                1.9 +/-    2.32       5.1 +/-    2.32  0.030 / 0.020
G13     249.2          28.8                6.2 +/-    1.72      11.2 +/-    1.72  0.020 / 0.020
G15     280.5          15.6                4.2 +/-    1.65      10.3 +/-    1.65  0.120 / 0.360
G17     332.3          77.4                4.8 +/-    0.31       4.9 +/-    0.31  0.120 / 0.390
G19     253.0          63.4                5.2 +/-    0.63       5.7 +/-    0.63  0.120 / 0.130
G28     57.4           51.3                4.2 +/-    0.73       5.2 +/-    0.73  0.110 / 0.120
G30     150.3          37.1                6.5 +/-    1.13      10.0 +/-    1.13  0.090 / 0.080