PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-07:57:40
G02     242.4          77.7                7.4 +/-    0.40       7.5 +/-    0.40  0.070 / 0.270
G05     173.4          13.8                2.8 +/-    2.05       7.1 +/-    2.05  0.060 / 0.290
G06     40.7           59.4                6.5 +/-    0.47       7.4 +/-    0.47  0.030 / 0.040
G12     321.7          52.6                6.7 +/-    0.98       8.2 +/-    0.98  0.030 / 0.040
G17     69.7           22.1                5.0 +/-    0.55      10.4 +/-    0.55  0.070 / 0.100
G19     56.9           37.4                5.1 +/-    0.44       7.8 +/-    0.44  0.090 / 0.090
G24     248.1          35.3                9.0 +/-    1.19      14.2 +/-    1.19  0.150 / 0.360
G25     315.9          11.3               -5.3 +/-   33.44     -14.4 +/-   33.44  0.150 / 0.320
G28     129.9          9.9                 7.7 +/-   11.65      21.5 +/-   11.65  0.280 / 0.580