PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-22:13:10
G03     232.0          66.8                7.4 +/-    0.37       7.9 +/-    0.37  0.080 / 0.300
G07     249.9          10.9               -1.0 +/-   23.91      -2.8 +/-   23.91  0.070 / 0.340
G09     305.5          21.9                5.9 +/-    3.29      12.4 +/-    3.29  0.030 / 0.050
G14     101.9          12.1                8.7 +/-    2.38      23.1 +/-    2.38  0.040 / 0.050
G16     124.1          60.3                9.6 +/-    0.47      10.9 +/-    0.47  0.140 / 0.500
G22     194.3          52.8                9.4 +/-    1.42      11.5 +/-    1.42  0.130 / 0.480
G23     319.6          49.3                6.1 +/-    0.82       7.7 +/-    0.82  0.040 / 0.050
G26     68.4           52.4                6.3 +/-    0.60       7.8 +/-    0.60  0.040 / 0.050
G31     52.4           21.3                4.3 +/-    0.97       9.2 +/-    0.97  0.050 / 0.070