PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-07:57:50
G02     313.0          82.1                6.8 +/-    0.54       6.8 +/-    0.54  0.090 / 0.120
G05     169.1          23.9                7.0 +/-    1.26      14.1 +/-    1.26  0.110 / 0.130
G06     39.5           48.5                5.7 +/-    0.57       7.4 +/-    0.57  0.030 / 0.030
G12     319.8          63.8                5.1 +/-    1.00       5.6 +/-    1.00  0.040 / 0.030
G17     78.7           15.5                6.3 +/-    1.29      15.4 +/-    1.29  0.060 / 0.080
G19     67.5           30.4                6.2 +/-    1.73      10.8 +/-    1.73  0.060 / 0.090
G24     237.0          28.7                7.8 +/-    1.30      14.1 +/-    1.30  0.050 / 0.030
G25     317.2          21.1                3.0 +/-    2.22       6.5 +/-    2.22  0.040 / 0.030