PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-06:12:40
G02     200.3          29.0                8.1 +/-    2.24      14.5 +/-    2.24  0.180 / 0.220
G06     166.0          60.7                9.6 +/-    0.34      10.8 +/-    0.34  0.190 / 0.290
G12     303.0          11.4               -1.8 +/-   16.25      -4.9 +/-   16.25  0.150 / 0.200
G17     29.5           54.2                6.5 +/-    0.96       7.8 +/-    0.96  0.260 / 0.220
G19     348.7          68.9                6.0 +/-    0.61       6.4 +/-    0.61  0.040 / 0.030
G24     305.8          32.6                5.4 +/-    2.32       9.0 +/-    2.32  0.040 / 0.040
G28     88.7           43.6                8.8 +/-    1.09      12.1 +/-    1.09  0.050 / 0.080
G30     159.0          12.3                5.6 +/-    1.86      14.9 +/-    1.86  0.050 / 0.060