PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-07:57:50
G02     242.4          77.7                7.7 +/-    0.61       7.8 +/-    0.61  0.210 / 0.270
G05     173.4          13.8                5.4 +/-    3.34      13.8 +/-    3.34  0.120 / 0.240
G06     40.7           59.4                7.2 +/-    0.64       8.2 +/-    0.64  0.050 / 0.050
G12     321.7          52.6                5.4 +/-    0.60       6.6 +/-    0.60  0.040 / 0.040
G17     69.7           22.1                4.1 +/-    3.25       8.7 +/-    3.25  0.080 / 0.050
G19     56.9           37.4                5.5 +/-    1.63       8.3 +/-    1.63  0.070 / 0.060
G24     248.1          35.3               10.0 +/-    1.99      15.8 +/-    1.99  0.300 / 0.460
G25     315.9          11.3               -6.9 +/-   33.27     -18.7 +/-   33.27  0.190 / 0.620
G28     129.9          9.9                 7.4 +/-    3.76      20.6 +/-    3.76  0.030 / 0.030