PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-21:12:30
G01     223.0          16.2               10.9 +/-    0.88      26.3 +/-    0.88  0.030 / 0.040
G03     288.9          67.3                6.7 +/-    0.64       7.2 +/-    0.64  0.040 / 0.030
G09     295.7          12.3                9.9 +/-    2.01      26.4 +/-    2.01  0.080 / 0.200
G14     84.6           27.4                7.6 +/-    1.04      14.0 +/-    1.04  0.080 / 0.180
G16     143.3          45.7               12.5 +/-    1.49      16.7 +/-    1.49  0.060 / 0.080
G22     218.8          70.0                7.6 +/-    0.70       8.0 +/-    0.70  0.040 / 0.080
G23     307.5          37.4              -10.1 +/-    1.36     -15.4 +/-    1.36  0.090 / 0.220
G26     96.9           54.3                9.0 +/-    0.85      10.8 +/-    0.85  0.090 / 0.150
G31     45.6           32.1                6.4 +/-    0.65      10.7 +/-    0.65  0.040 / 0.040