PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-15:12:50
G08     318.3          13.6                4.6 +/-    2.49      11.8 +/-    2.49  0.050 / 0.060
G10     313.3          56.9                5.4 +/-    1.84       6.3 +/-    1.84  0.070 / 0.060
G14     212.8          15.4                6.6 +/-    3.40      16.3 +/-    3.40  0.220 / 0.410
G15     45.4           17.1                4.2 +/-    2.15      10.0 +/-    2.15  0.140 / 0.320
G20     20.3           62.9                6.9 +/-    1.57       7.6 +/-    1.57  0.030 / 0.040
G21     117.8          67.0                7.5 +/-    1.10       8.1 +/-    1.10  0.040 / 0.040
G24     90.0           29.4                9.3 +/-    1.05      16.5 +/-    1.05  0.110 / 0.380
G27     290.8          37.4                3.8 +/-    4.19       5.7 +/-    4.19  0.140 / 0.300
G32     213.6          42.0                7.4 +/-    1.16      10.5 +/-    1.16  0.080 / 0.060