PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-21:12:40
G01     223.0          16.2               10.9 +/-    3.07      26.4 +/-    3.07  0.040 / 0.040
G03     288.9          67.3                8.3 +/-    0.38       8.9 +/-    0.38  0.040 / 0.040
G09     295.7          12.3                8.7 +/-    2.69      23.2 +/-    2.69  0.080 / 0.210
G14     84.6           27.4                8.9 +/-    1.30      16.5 +/-    1.30  0.080 / 0.200
G16     143.3          45.7               11.9 +/-    1.46      15.9 +/-    1.46  0.040 / 0.080
G22     218.8          70.0                9.2 +/-    0.82       9.8 +/-    0.82  0.040 / 0.070
G23     307.5          37.4               -9.7 +/-    1.53     -14.8 +/-    1.53  0.040 / 0.030
G26     96.9           54.3                9.4 +/-    1.46      11.3 +/-    1.46  0.030 / 0.030
G31     45.6           32.1                7.0 +/-    1.26      11.7 +/-    1.26  0.060 / 0.090