PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-22:57:30
G01     228.4          18.9               10.3 +/-    3.76      23.3 +/-    3.76  0.030 / 0.030
G03     293.3          65.8                8.5 +/-    0.95       9.2 +/-    0.95  0.030 / 0.030
G14     84.5           25.6                8.0 +/-    2.07      15.5 +/-    2.07  0.060 / 0.050
G16     153.5          40.5               12.2 +/-    0.93      17.5 +/-    0.93  0.040 / 0.090
G22     226.2          72.9                9.9 +/-    0.38      10.3 +/-    0.38  0.080 / 0.170
G23     304.9          34.7                8.4 +/-    1.78      13.4 +/-    1.78  0.110 / 0.170
G26     106.0          54.0                9.9 +/-    0.43      11.9 +/-    0.43  0.040 / 0.040
G31     43.5           36.5                7.7 +/-    1.43      11.9 +/-    1.43  0.030 / 0.030