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               10.6 +/-    2.22      23.9 +/-    2.22  0.040 / 0.050
G03     293.3          65.8                7.1 +/-    1.50       7.7 +/-    1.50  0.030 / 0.050
G14     84.5           25.6                8.9 +/-    1.74      17.1 +/-    1.74  0.070 / 0.100
G16     153.5          40.5               12.2 +/-    0.73      17.7 +/-    0.73  0.060 / 0.080
G22     226.2          72.9               10.5 +/-    0.49      10.9 +/-    0.49  0.050 / 0.070
G23     304.9          34.7                9.0 +/-    0.80      14.4 +/-    0.80  0.040 / 0.080
G26     106.0          54.0                9.7 +/-    0.74      11.6 +/-    0.74  0.140 / 0.300
G31     43.5           36.5                5.6 +/-    0.79       8.6 +/-    0.79  0.130 / 0.310